27731950983 has 12 divisors (see below), whose sum is σ = 43698832008. Its totient is φ = 16807242960.

The previous prime is 27731950969. The next prime is 27731950991. The reversal of 27731950983 is 38905913772.

27731950983 is a `hidden beast` number, since 27 + 7 + 31 + 9 + 509 + 83 = 666.

It is not a de Polignac number, because 27731950983 - 2⁵ = 27731950951 is a prime.

It is a super-2 number, since 2×27731950983² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27731950943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140060260 + ... + 140060457.

It is an arithmetic number, because the mean of its divisors is an integer number (3641569334).

Almost surely, 2^27731950983 is an apocalyptic number.

27731950983 is a deficient number, since it is larger than the sum of its proper divisors (15966881025).

27731950983 is a wasteful number, since it uses less digits than its factorization.

27731950983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280120734 (or 280120731 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The spelling of 27731950983 in words is "twenty-seven billion, seven hundred thirty-one million, nine hundred fifty thousand, nine hundred eighty-three".