64712412065 has 16 divisors (see below), whose sum is σ = 91808743680. Its totient is φ = 42844079040.

The previous prime is 64712412049. The next prime is 64712412067. The reversal of 64712412065 is 56021421746.

It is a happy number.

It is not a de Polignac number, because 64712412065 - 2⁴ = 64712412049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64712412067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31877021 + ... + 31879050.

It is an arithmetic number, because the mean of its divisors is an integer number (5738046480).

Almost surely, 2^64712412065 is an apocalyptic number.

It is an amenable number.

64712412065 is a deficient number, since it is larger than the sum of its proper divisors (27096331615).

64712412065 is a wasteful number, since it uses less digits than its factorization.

64712412065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63756112.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 64712412065 in words is "sixty-four billion, seven hundred twelve million, four hundred twelve thousand, sixty-five".