61547680968 has 64 divisors (see below), whose sum is σ = 156235815360. Its totient is φ = 20200621056.

The previous prime is 61547680939. The next prime is 61547680973. The reversal of 61547680968 is 86908674516.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4226596 + ... + 4241132.

It is an arithmetic number, because the mean of its divisors is an integer number (2441184615).

Almost surely, 2^61547680968 is an apocalyptic number.

It is an amenable number.

61547680968 is an abundant number, since it is smaller than the sum of its proper divisors (94688134392).

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

61547680968 is a wasteful number, since it uses less digits than its factorization.

61547680968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17246 (or 17242 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 61547680968 in words is "sixty-one billion, five hundred forty-seven million, six hundred eighty thousand, nine hundred sixty-eight".