61650011560 has 32 divisors (see below), whose sum is σ = 138946496040. Its totient is φ = 24618409984.

The previous prime is 61650011459. The next prime is 61650011561. The reversal of 61650011560 is 6511005616.

It can be written as a sum of positive squares in 4 ways, for example, as 61604232804 + 45778756 = 248202^2 + 6766^2 .

It is not an unprimeable number, because it can be changed into a prime (61650011561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1275817 + ... + 1323256.

Almost surely, 2^61650011560 is an apocalyptic number.

It is an amenable number.

61650011560 is an abundant number, since it is smaller than the sum of its proper divisors (77296484480).

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

61650011560 is a wasteful number, since it uses less digits than its factorization.

61650011560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599677 (or 2599673 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 61650011560 in words is "sixty-one billion, six hundred fifty million, eleven thousand, five hundred sixty".