27901161975 has 12 divisors (see below), whose sum is σ = 46129921256. Its totient is φ = 14880619680.

The previous prime is 27901161949. The next prime is 27901161979. The reversal of 27901161975 is 57916110972.

It is not a de Polignac number, because 27901161975 - 2²² = 27896967671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27901161979) 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, 186007672 + ... + 186007821.

Almost surely, 2^27901161975 is an apocalyptic number.

27901161975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27901161975 is a deficient number, since it is larger than the sum of its proper divisors (18228759281).

27901161975 is a wasteful number, since it uses less digits than its factorization.

27901161975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372015506 (or 372015501 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 48.

The spelling of 27901161975 in words is "twenty-seven billion, nine hundred one million, one hundred sixty-one thousand, nine hundred seventy-five".