264055509990 has 192 divisors, whose sum is σ = 712144742400. Its totient is φ = 67852512000.

The previous prime is 264055509979. The next prime is 264055509997. The reversal of 264055509990 is 99905550462.

264055509990 is a `hidden beast` number, since 2 + 6 + 40 + 5 + 5 + 509 + 9 + 90 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264055509997) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 50983221 + ... + 50988399.

It is an arithmetic number, because the mean of its divisors is an integer number (3709087200).

Almost surely, 2^264055509990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264055509990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356072371200).

264055509990 is an abundant number, since it is smaller than the sum of its proper divisors (448089232410).

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

264055509990 is a wasteful number, since it uses less digits than its factorization.

264055509990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5443 (or 5440 counting only the distinct ones).

The product of its (nonzero) digits is 4374000, while the sum is 54.

The spelling of 264055509990 in words is "two hundred sixty-four billion, fifty-five million, five hundred nine thousand, nine hundred ninety".