64677515529613 has 8 divisors (see below), whose sum is σ = 74607975191232. Its totient is φ = 54919759514496.

The previous prime is 64677515529577. The next prime is 64677515529643. The reversal of 64677515529613 is 31692551577646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64677515529613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64677515529643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43175910820 + ... + 43175912317.

It is an arithmetic number, because the mean of its divisors is an integer number (9325996898904).

Almost surely, 2^{64677515529613} is an apocalyptic number.

It is an amenable number.

64677515529613 is a deficient number, since it is larger than the sum of its proper divisors (9930459661619).

64677515529613 is a wasteful number, since it uses less digits than its factorization.

64677515529613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86351823251.

The product of its digits is 285768000, while the sum is 67.

The spelling of 64677515529613 in words is "sixty-four trillion, six hundred seventy-seven billion, five hundred fifteen million, five hundred twenty-nine thousand, six hundred thirteen".