64925991088 has 20 divisors (see below), whose sum is σ = 143764694800. Its totient is φ = 27825424704.

The previous prime is 64925991083. The next prime is 64925991103. The reversal of 64925991088 is 88019952946.

It is not an unprimeable number, because it can be changed into a prime (64925991083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289848063 + ... + 289848286.

It is an arithmetic number, because the mean of its divisors is an integer number (7188234740).

Almost surely, 2^64925991088 is an apocalyptic number.

It is an amenable number.

64925991088 is an abundant number, since it is smaller than the sum of its proper divisors (78838703712).

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

64925991088 is a wasteful number, since it uses less digits than its factorization.

64925991088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579696364 (or 579696358 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 61.

The spelling of 64925991088 in words is "sixty-four billion, nine hundred twenty-five million, nine hundred ninety-one thousand, eighty-eight".