64042001615 has 4 divisors (see below), whose sum is σ = 76850401944. Its totient is φ = 51233601288.

The previous prime is 64042001603. The next prime is 64042001627. The reversal of 64042001615 is 51610024046.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (64042001603) and next prime (64042001627).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64042001615 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6404200157 + ... + 6404200166.

It is an arithmetic number, because the mean of its divisors is an integer number (19212600486).

Almost surely, 2^64042001615 is an apocalyptic number.

64042001615 is a deficient number, since it is larger than the sum of its proper divisors (12808400329).

64042001615 is a wasteful number, since it uses less digits than its factorization.

64042001615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12808400328.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 64042001615 in words is "sixty-four billion, forty-two million, one thousand, six hundred fifteen".