64502110640 has 40 divisors (see below), whose sum is σ = 163600810128. Its totient is φ = 23455312640.

The previous prime is 64502110571. The next prime is 64502110663. The reversal of 64502110640 is 4601120546.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36648047 + ... + 36649806.

Almost surely, 2^64502110640 is an apocalyptic number.

It is an amenable number.

64502110640 is an abundant number, since it is smaller than the sum of its proper divisors (99098699488).

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

64502110640 is a wasteful number, since it uses less digits than its factorization.

64502110640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73297877 (or 73297871 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 64502110640 in words is "sixty-four billion, five hundred two million, one hundred ten thousand, six hundred forty".