61055097831 has 96 divisors (see below), whose sum is σ = 115232906880. Its totient is φ = 30229880832.

The previous prime is 61055097827. The next prime is 61055097847. The reversal of 61055097831 is 13879055016.

It is a happy number.

61055097831 is a `hidden beast` number, since 6 + 1 + 0 + 550 + 97 + 8 + 3 + 1 = 666.

It is not a de Polignac number, because 61055097831 - 2² = 61055097827 is a prime.

It is a super-2 number, since 2×61055097831² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61055097811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5410411 + ... + 5421683.

It is an arithmetic number, because the mean of its divisors is an integer number (1200342780).

Almost surely, 2^61055097831 is an apocalyptic number.

61055097831 is a deficient number, since it is larger than the sum of its proper divisors (54177809049).

61055097831 is a wasteful number, since it uses less digits than its factorization.

61055097831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11705 (or 11702 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The spelling of 61055097831 in words is "sixty-one billion, fifty-five million, ninety-seven thousand, eight hundred thirty-one".