56666677995 has 12 divisors (see below), whose sum is σ = 98222241936. Its totient is φ = 30222228240.

The previous prime is 56666677993. The next prime is 56666677997. The reversal of 56666677995 is 59977666665.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (56666677993) and next prime (56666677997).

It is not a de Polignac number, because 56666677995 - 2¹ = 56666677993 is a prime.

It is a super-2 number, since 2×56666677995² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56666677993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 629629711 + ... + 629629800.

It is an arithmetic number, because the mean of its divisors is an integer number (8185186828).

Almost surely, 2^56666677995 is an apocalyptic number.

56666677995 is a deficient number, since it is larger than the sum of its proper divisors (41555563941).

56666677995 is a wasteful number, since it uses less digits than its factorization.

56666677995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259259522 (or 1259259519 counting only the distinct ones).

The product of its digits is 771573600, while the sum is 72.

The spelling of 56666677995 in words is "fifty-six billion, six hundred sixty-six million, six hundred seventy-seven thousand, nine hundred ninety-five".