61139453111 has 16 divisors (see below), whose sum is σ = 68774832000. Its totient is φ = 53875554720.

The previous prime is 61139453099. The next prime is 61139453201. The reversal of 61139453111 is 11135493116.

It is a cyclic number.

It is not a de Polignac number, because 61139453111 - 2³⁰ = 60065711287 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 (61139453311) 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 15 ways as a sum of consecutive naturals, for example, 583361 + ... + 680138.

It is an arithmetic number, because the mean of its divisors is an integer number (4298427000).

Almost surely, 2^61139453111 is an apocalyptic number.

61139453111 is a deficient number, since it is larger than the sum of its proper divisors (7635378889).

61139453111 is a wasteful number, since it uses less digits than its factorization.

61139453111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263646.

The product of its digits is 9720, while the sum is 35.

The spelling of 61139453111 in words is "sixty-one billion, one hundred thirty-nine million, four hundred fifty-three thousand, one hundred eleven".