10188073640 has 16 divisors (see below), whose sum is σ = 22923165780. Its totient is φ = 4075229440.

The previous prime is 10188073613. The next prime is 10188073663. The reversal of 10188073640 is 4637088101.

It can be written as a sum of positive squares in 2 ways, for example, as 10116738724 + 71334916 = 100582^2 + 8446^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10188073594 and 10188073603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127350881 + ... + 127350960.

Almost surely, 2^10188073640 is an apocalyptic number.

10188073640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10188073640 is an abundant number, since it is smaller than the sum of its proper divisors (12735092140).

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

10188073640 is a wasteful number, since it uses less digits than its factorization.

10188073640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254701852 (or 254701848 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 10188073640 in words is "ten billion, one hundred eighty-eight million, seventy-three thousand, six hundred forty".