56166672838 has 16 divisors (see below), whose sum is σ = 87465368160. Its totient is φ = 27018443200.

The previous prime is 56166672817. The next prime is 56166672839. The reversal of 56166672838 is 83827666165.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56166672839) 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 7 ways as a sum of consecutive naturals, for example, 1706818 + ... + 1739413.

It is an arithmetic number, because the mean of its divisors is an integer number (5466585510).

Almost surely, 2^56166672838 is an apocalyptic number.

56166672838 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

56166672838 is a deficient number, since it is larger than the sum of its proper divisors (31298695322).

56166672838 is a wasteful number, since it uses less digits than its factorization.

56166672838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3446543.

The product of its digits is 17418240, while the sum is 58.

The spelling of 56166672838 in words is "fifty-six billion, one hundred sixty-six million, six hundred seventy-two thousand, eight hundred thirty-eight".