64256554236 has 96 divisors (see below), whose sum is σ = 186333944832. Its totient is φ = 16812057600.

The previous prime is 64256554231. The next prime is 64256554277. The reversal of 64256554236 is 63245565246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64256554231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 555240 + ... + 660911.

It is an arithmetic number, because the mean of its divisors is an integer number (1940978592).

Almost surely, 2^64256554236 is an apocalyptic number.

It is an amenable number.

64256554236 is an abundant number, since it is smaller than the sum of its proper divisors (122077390596).

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

64256554236 is a wasteful number, since it uses less digits than its factorization.

64256554236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216219 (or 1216217 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 48.

The spelling of 64256554236 in words is "sixty-four billion, two hundred fifty-six million, five hundred fifty-four thousand, two hundred thirty-six".