61726361031 has 12 divisors (see below), whose sum is σ = 90671491560. Its totient is φ = 40453434000.

The previous prime is 61726361023. The next prime is 61726361033. The reversal of 61726361031 is 13016362716.

61726361031 is a `hidden beast` number, since 6 + 1 + 7 + 2 + 6 + 3 + 610 + 31 = 666.

It is not a de Polignac number, because 61726361031 - 2³ = 61726361023 is a prime.

It is a super-2 number, since 2×61726361031² (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 (61726361033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58122220 + ... + 58123281.

It is an arithmetic number, because the mean of its divisors is an integer number (7555957630).

Almost surely, 2^61726361031 is an apocalyptic number.

61726361031 is a deficient number, since it is larger than the sum of its proper divisors (28945130529).

61726361031 is a wasteful number, since it uses less digits than its factorization.

61726361031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116245566 (or 116245563 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The spelling of 61726361031 in words is "sixty-one billion, seven hundred twenty-six million, three hundred sixty-one thousand, thirty-one".