61275720831118 has 16 divisors (see below), whose sum is σ = 95910295379616. Its totient is φ = 29305635467680.

The previous prime is 61275720831109. The next prime is 61275720831151. The reversal of 61275720831118 is 81113802757216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6498948 + ... + 12836968.

It is an arithmetic number, because the mean of its divisors is an integer number (5994393461226).

Almost surely, 2^{61275720831118} is an apocalyptic number.

61275720831118 is a deficient number, since it is larger than the sum of its proper divisors (34634574548498).

61275720831118 is a wasteful number, since it uses less digits than its factorization.

61275720831118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6548219.

The product of its (nonzero) digits is 1128960, while the sum is 52.

The spelling of 61275720831118 in words is "sixty-one trillion, two hundred seventy-five billion, seven hundred twenty million, eight hundred thirty-one thousand, one hundred eighteen".