64077667906 has 32 divisors (see below), whose sum is σ = 112500171648. Its totient is φ = 26804044800.

The previous prime is 64077667891. The next prime is 64077667919. The reversal of 64077667906 is 60976677046.

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, 80520 + ... + 366931.

It is an arithmetic number, because the mean of its divisors is an integer number (3515630364).

Almost surely, 2^64077667906 is an apocalyptic number.

64077667906 is a deficient number, since it is larger than the sum of its proper divisors (48422503742).

64077667906 is a wasteful number, since it uses less digits than its factorization.

64077667906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447706.

The product of its (nonzero) digits is 16003008, while the sum is 58.

The spelling of 64077667906 in words is "sixty-four billion, seventy-seven million, six hundred sixty-seven thousand, nine hundred six".