64077667905 has 16 divisors (see below), whose sum is σ = 102768966720. Its totient is φ = 34093190208.

The previous prime is 64077667891. The next prime is 64077667919. The reversal of 64077667905 is 50976677046.

It is an interprime number because it is at equal distance from previous prime (64077667891) and next prime (64077667919).

It is not a de Polignac number, because 64077667905 - 2⁷ = 64077667777 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5091382 + ... + 5103951.

It is an arithmetic number, because the mean of its divisors is an integer number (6423060420).

Almost surely, 2^64077667905 is an apocalyptic number.

It is an amenable number.

64077667905 is a deficient number, since it is larger than the sum of its proper divisors (38691298815).

64077667905 is a wasteful number, since it uses less digits than its factorization.

64077667905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10195760.

The product of its (nonzero) digits is 13335840, while the sum is 57.

The spelling of 64077667905 in words is "sixty-four billion, seventy-seven million, six hundred sixty-seven thousand, nine hundred five".