27970358121 has 48 divisors (see below), whose sum is σ = 43007283072. Its totient is φ = 17479123200.

The previous prime is 27970358113. The next prime is 27970358123. The reversal of 27970358121 is 12185307972.

27970358121 is a `hidden beast` number, since 279 + 7 + 0 + 358 + 1 + 21 = 666.

It is not a de Polignac number, because 27970358121 - 2³ = 27970358113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27970358123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3544246 + ... + 3552128.

It is an arithmetic number, because the mean of its divisors is an integer number (895985064).

Almost surely, 2^27970358121 is an apocalyptic number.

It is an amenable number.

27970358121 is a deficient number, since it is larger than the sum of its proper divisors (15036924951).

27970358121 is a wasteful number, since it uses less digits than its factorization.

27970358121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8254 (or 8251 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 27970358121 in words is "twenty-seven billion, nine hundred seventy million, three hundred fifty-eight thousand, one hundred twenty-one".