61849555502931 has 12 divisors (see below), whose sum is σ = 102100853528752. Its totient is φ = 35342603144496.

The previous prime is 61849555502849. The next prime is 61849555502939. The reversal of 61849555502931 is 13920555594816.

61849555502931 is a `hidden beast` number, since 6 + 1 + 8 + 4 + 9 + 55 + 550 + 29 + 3 + 1 = 666.

It is not a de Polignac number, because 61849555502931 - 2²⁹ = 61849018632019 is a prime.

It is a super-2 number, since 2×61849555502931² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 981738976237 = 61849555502931 / (6 + 1 + 8 + 4 + 9 + 5 + 5 + 5 + 5 + 0 + 2 + 9 + 3 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61849555502939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 490869488056 + ... + 490869488181.

Almost surely, 2^{61849555502931} is an apocalyptic number.

61849555502931 is a deficient number, since it is larger than the sum of its proper divisors (40251298025821).

61849555502931 is a wasteful number, since it uses less digits than its factorization.

61849555502931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981738976250 (or 981738976247 counting only the distinct ones).

The product of its (nonzero) digits is 58320000, while the sum is 63.

The spelling of 61849555502931 in words is "sixty-one trillion, eight hundred forty-nine billion, five hundred fifty-five million, five hundred two thousand, nine hundred thirty-one".