64537080991016 has 32 divisors (see below), whose sum is σ = 121367788102080. Its totient is φ = 32172340166400.

The previous prime is 64537080991003. The next prime is 64537080991037. The reversal of 64537080991016 is 61019908073546.

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, 282186551 + ... + 282415161.

It is an arithmetic number, because the mean of its divisors is an integer number (3792743378190).

Almost surely, 2^{64537080991016} is an apocalyptic number.

It is an amenable number.

64537080991016 is a deficient number, since it is larger than the sum of its proper divisors (56830707111064).

64537080991016 is a wasteful number, since it uses less digits than its factorization.

64537080991016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333665 (or 333661 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 59.

The spelling of 64537080991016 in words is "sixty-four trillion, five hundred thirty-seven billion, eighty million, nine hundred ninety-one thousand, sixteen".