27700890856947 has 144 divisors (see below), whose sum is σ = 50932226442240. Its totient is φ = 14345966073600.

The previous prime is 27700890856889. The next prime is 27700890856949. The reversal of 27700890856947 is 74965809800772.

It is not a de Polignac number, because 27700890856947 - 2³⁴ = 27683710987763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27700890856949) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3153916918 + ... + 3153925700.

It is an arithmetic number, because the mean of its divisors is an integer number (353696016960).

Almost surely, 2^{27700890856947} is an apocalyptic number.

27700890856947 is a deficient number, since it is larger than the sum of its proper divisors (23231335585293).

27700890856947 is a wasteful number, since it uses less digits than its factorization.

27700890856947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10734 (or 10724 counting only the distinct ones).

The product of its (nonzero) digits is 426746880, while the sum is 72.

The spelling of 27700890856947 in words is "twenty-seven trillion, seven hundred billion, eight hundred ninety million, eight hundred fifty-six thousand, nine hundred forty-seven".