64549070971 has 12 divisors (see below), whose sum is σ = 81913849560. Its totient is φ = 50297976960.

The previous prime is 64549070939. The next prime is 64549071047. The reversal of 64549070971 is 17907094546.

It is not a de Polignac number, because 64549070971 - 2⁵ = 64549070939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64549070071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59878006 + ... + 59879083.

It is an arithmetic number, because the mean of its divisors is an integer number (6826154130).

Almost surely, 2^64549070971 is an apocalyptic number.

64549070971 is a deficient number, since it is larger than the sum of its proper divisors (17364778589).

64549070971 is a wasteful number, since it uses less digits than its factorization.

64549070971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119757114 (or 119757107 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 52.

The spelling of 64549070971 in words is "sixty-four billion, five hundred forty-nine million, seventy thousand, nine hundred seventy-one".