61156572111272 has 16 divisors (see below), whose sum is σ = 125092988409600. Its totient is φ = 27798441868720.

The previous prime is 61156572111269. The next prime is 61156572111301. The reversal of 61156572111272 is 27211127565116.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347480523272 + ... + 347480523447.

It is an arithmetic number, because the mean of its divisors is an integer number (7818311775600).

Almost surely, 2^{61156572111272} is an apocalyptic number.

It is an amenable number.

61156572111272 is an abundant number, since it is smaller than the sum of its proper divisors (63936416298328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61156572111272 is a wasteful number, since it uses less digits than its factorization.

61156572111272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694961046736 (or 694961046732 counting only the distinct ones).

The product of its digits is 352800, while the sum is 47.

Adding to 61156572111272 its reverse (27211127565116), we get a palindrome (88367699676388).

The spelling of 61156572111272 in words is "sixty-one trillion, one hundred fifty-six billion, five hundred seventy-two million, one hundred eleven thousand, two hundred seventy-two".