61980716832 has 48 divisors (see below), whose sum is σ = 166161082752. Its totient is φ = 20220657920.

The previous prime is 61980716827. The next prime is 61980716849. The reversal of 61980716832 is 23861708916.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 6863919 + ... + 6872942.

It is an arithmetic number, because the mean of its divisors is an integer number (3461689224).

Almost surely, 2^61980716832 is an apocalyptic number.

It is an amenable number.

61980716832 is an abundant number, since it is smaller than the sum of its proper divisors (104180365920).

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

61980716832 is a wasteful number, since it uses less digits than its factorization.

61980716832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13736921 (or 13736913 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 61980716832 in words is "sixty-one billion, nine hundred eighty million, seven hundred sixteen thousand, eight hundred thirty-two".