27716872557 has 32 divisors (see below), whose sum is σ = 40778219520. Its totient is φ = 16606235520.

The previous prime is 27716872541. The next prime is 27716872567. The reversal of 27716872557 is 75527861772.

It is not a de Polignac number, because 27716872557 - 2⁴ = 27716872541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27716872497 and 27716872506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27716872567) 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 31 ways as a sum of consecutive naturals, for example, 1174369 + ... + 1197737.

It is an arithmetic number, because the mean of its divisors is an integer number (1274319360).

Almost surely, 2^27716872557 is an apocalyptic number.

It is an amenable number.

27716872557 is a deficient number, since it is larger than the sum of its proper divisors (13061346963).

27716872557 is a wasteful number, since it uses less digits than its factorization.

27716872557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23793.

The product of its digits is 11524800, while the sum is 57.

The spelling of 27716872557 in words is "twenty-seven billion, seven hundred sixteen million, eight hundred seventy-two thousand, five hundred fifty-seven".