64910902408 has 64 divisors (see below), whose sum is σ = 134498257920. Its totient is φ = 29123284800.

The previous prime is 64910902403. The next prime is 64910902421. The reversal of 64910902408 is 80420901946.

It is not an unprimeable number, because it can be changed into a prime (64910902403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2807391 + ... + 2830417.

It is an arithmetic number, because the mean of its divisors is an integer number (2101535280).

Almost surely, 2^64910902408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64910902408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67249128960).

64910902408 is an abundant number, since it is smaller than the sum of its proper divisors (69587355512).

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

64910902408 is a wasteful number, since it uses less digits than its factorization.

64910902408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23458 (or 23454 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 64910902408 in words is "sixty-four billion, nine hundred ten million, nine hundred two thousand, four hundred eight".