66253130240 has 160 divisors (see below), whose sum is σ = 180829604736. Its totient is φ = 23044341760.

The previous prime is 66253130239. The next prime is 66253130261. The reversal of 66253130240 is 4203135266.

66253130240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 66253130197 and 66253130206.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 596534 + ... + 698826.

Almost surely, 2^66253130240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66253130240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90414802368).

66253130240 is an abundant number, since it is smaller than the sum of its proper divisors (114576474496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66253130240 is a wasteful number, since it uses less digits than its factorization.

66253130240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102350 (or 102334 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 66253130240 in words is "sixty-six billion, two hundred fifty-three million, one hundred thirty thousand, two hundred forty".