64695274655967 has 24 divisors (see below), whose sum is σ = 96174684509904. Its totient is φ = 41883645976704.

The previous prime is 64695274655941. The next prime is 64695274656007. The reversal of 64695274655967 is 76955647259646.

64695274655967 is a `hidden beast` number, since 6 + 4 + 6 + 9 + 52 + 7 + 4 + 6 + 559 + 6 + 7 = 666.

It is not a de Polignac number, because 64695274655967 - 2¹⁶ = 64695274590431 is a prime.

It is a super-2 number, since 2×64695274655967² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64695274695967) 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, 483086958 + ... + 483220859.

It is an arithmetic number, because the mean of its divisors is an integer number (4007278521246).

Almost surely, 2^{64695274655967} is an apocalyptic number.

64695274655967 is a deficient number, since it is larger than the sum of its proper divisors (31479409853937).

64695274655967 is a wasteful number, since it uses less digits than its factorization.

64695274655967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966308039 (or 966308036 counting only the distinct ones).

The product of its digits is 20575296000, while the sum is 81.

The spelling of 64695274655967 in words is "sixty-four trillion, six hundred ninety-five billion, two hundred seventy-four million, six hundred fifty-five thousand, nine hundred sixty-seven".