61508032506 has 20 divisors (see below), whose sum is σ = 137823554682. Its totient is φ = 20502677448.

The previous prime is 61508032471. The next prime is 61508032519. The reversal of 61508032506 is 60523080516.

61508032506 is a `hidden beast` number, since 615 + 0 + 8 + 0 + 32 + 5 + 0 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 60585391881 + 922640625 = 246141^2 + 30375^2 .

It is a Curzon number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 189839445 + ... + 189839768.

Almost surely, 2^61508032506 is an apocalyptic number.

61508032506 is an abundant number, since it is smaller than the sum of its proper divisors (76315522176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61508032506 is a wasteful number, since it uses less digits than its factorization.

61508032506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379679227 (or 379679218 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 61508032506 in words is "sixty-one billion, five hundred eight million, thirty-two thousand, five hundred six".