64670288635038 has 16 divisors (see below), whose sum is σ = 129382530137856. Its totient is φ = 21549770733720.

The previous prime is 64670288635021. The next prime is 64670288635079. The reversal of 64670288635038 is 83053688207646.

It is a super-2 number, since 2×64670288635038² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64670288635038.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1748016118 + ... + 1748053113.

It is an arithmetic number, because the mean of its divisors is an integer number (8086408133616).

Almost surely, 2^{64670288635038} is an apocalyptic number.

64670288635038 is an abundant number, since it is smaller than the sum of its proper divisors (64712241502818).

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

64670288635038 is a wasteful number, since it uses less digits than its factorization.

64670288635038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3496072319.

The product of its (nonzero) digits is 278691840, while the sum is 66.

The spelling of 64670288635038 in words is "sixty-four trillion, six hundred seventy billion, two hundred eighty-eight million, six hundred thirty-five thousand, thirty-eight".