27972615143 has 4 divisors (see below), whose sum is σ = 30515580168. Its totient is φ = 25429650120.

The previous prime is 27972615127. The next prime is 27972615149. The reversal of 27972615143 is 34151627972.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27972615143 - 2⁴ = 27972615127 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 (27972615149) 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 3 ways as a sum of consecutive naturals, for example, 1271482496 + ... + 1271482517.

It is an arithmetic number, because the mean of its divisors is an integer number (7628895042).

Almost surely, 2^27972615143 is an apocalyptic number.

27972615143 is a deficient number, since it is larger than the sum of its proper divisors (2542965025).

27972615143 is a wasteful number, since it uses less digits than its factorization.

27972615143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542965024.

The product of its digits is 635040, while the sum is 47.

The spelling of 27972615143 in words is "twenty-seven billion, nine hundred seventy-two million, six hundred fifteen thousand, one hundred forty-three".