64612910518 has 16 divisors (see below), whose sum is σ = 106802022096. Its totient is φ = 29127823200.

The previous prime is 64612910473. The next prime is 64612910521. The reversal of 64612910518 is 81501921646.

It is a Harshad number since it is a multiple of its sum of digits (43).

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, 28895533 + ... + 28897768.

It is an arithmetic number, because the mean of its divisors is an integer number (6675126381).

Almost surely, 2^64612910518 is an apocalyptic number.

64612910518 is a deficient number, since it is larger than the sum of its proper divisors (42189111578).

64612910518 is a wasteful number, since it uses less digits than its factorization.

64612910518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57793359.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 64612910518 in words is "sixty-four billion, six hundred twelve million, nine hundred ten thousand, five hundred eighteen".