61659100075 has 12 divisors (see below), whose sum is σ = 77059313920. Its totient is φ = 48938873760.

The previous prime is 61659100007. The next prime is 61659100081. The reversal of 61659100075 is 57000195616.

It is not a de Polignac number, because 61659100075 - 2²⁷ = 61524882347 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9706920 + ... + 9713269.

Almost surely, 2^61659100075 is an apocalyptic number.

61659100075 is a deficient number, since it is larger than the sum of its proper divisors (15400213845).

61659100075 is a wasteful number, since it uses less digits than its factorization.

61659100075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19420326 (or 19420321 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 40.

The spelling of 61659100075 in words is "sixty-one billion, six hundred fifty-nine million, one hundred thousand, seventy-five".