61589100531 has 12 divisors (see below), whose sum is σ = 95525952072. Its totient is φ = 35193771648.

The previous prime is 61589100527. The next prime is 61589100637. The reversal of 61589100531 is 13500198516.

It is not a de Polignac number, because 61589100531 - 2² = 61589100527 is a prime.

It is a super-2 number, since 2×61589100531² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61589100531.

It is not an unprimeable number, because it can be changed into a prime (61589100031) 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, 209486590 + ... + 209486883.

It is an arithmetic number, because the mean of its divisors is an integer number (7960496006).

Almost surely, 2^61589100531 is an apocalyptic number.

61589100531 is a deficient number, since it is larger than the sum of its proper divisors (33936851541).

61589100531 is a wasteful number, since it uses less digits than its factorization.

61589100531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418973490 (or 418973483 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 61589100531 in words is "sixty-one billion, five hundred eighty-nine million, one hundred thousand, five hundred thirty-one".