253243562064 has 80 divisors (see below), whose sum is σ = 655429192704. Its totient is φ = 84257712000.

The previous prime is 253243561969. The next prime is 253243562113. The reversal of 253243562064 is 460265342352.

It is a congruent number.

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, 94386867 + ... + 94389549.

Almost surely, 2^253243562064 is an apocalyptic number.

253243562064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

253243562064 is an abundant number, since it is smaller than the sum of its proper divisors (402185630640).

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

253243562064 is a wasteful number, since it uses less digits than its factorization.

253243562064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5616 (or 5610 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 42.

The spelling of 253243562064 in words is "two hundred fifty-three billion, two hundred forty-three million, five hundred sixty-two thousand, sixty-four".