61026457931 has 16 divisors (see below), whose sum is σ = 65052213408. Its totient is φ = 57049920000.

The previous prime is 61026457901. The next prime is 61026457937. The reversal of 61026457931 is 13975462016.

It is a cyclic number.

It is not a de Polignac number, because 61026457931 - 2⁶ = 61026457867 is a prime.

It is a super-2 number, since 2×61026457931² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61026457937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2613056 + ... + 2636306.

It is an arithmetic number, because the mean of its divisors is an integer number (4065763338).

Almost surely, 2^61026457931 is an apocalyptic number.

61026457931 is a deficient number, since it is larger than the sum of its proper divisors (4025755477).

61026457931 is a wasteful number, since it uses less digits than its factorization.

61026457931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24302.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 61026457931 in words is "sixty-one billion, twenty-six million, four hundred fifty-seven thousand, nine hundred thirty-one".