64278222975 has 24 divisors (see below), whose sum is σ = 118081477520. Its totient is φ = 34281718560.

The previous prime is 64278222947. The next prime is 64278222977. The reversal of 64278222975 is 57922287246.

64278222975 is a `hidden beast` number, since 64 + 278 + 22 + 297 + 5 = 666.

It is not a de Polignac number, because 64278222975 - 2¹¹ = 64278220927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64278222977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47612824 + ... + 47614173.

Almost surely, 2^64278222975 is an apocalyptic number.

64278222975 is a deficient number, since it is larger than the sum of its proper divisors (53803254545).

64278222975 is a wasteful number, since it uses less digits than its factorization.

64278222975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95227016 (or 95227005 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 64278222975 in words is "sixty-four billion, two hundred seventy-eight million, two hundred twenty-two thousand, nine hundred seventy-five".