61992518368 has 24 divisors (see below), whose sum is σ = 133143023160. Its totient is φ = 28178417280.

The previous prime is 61992518351. The next prime is 61992518377. The reversal of 61992518368 is 86381529916.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88057203 + ... + 88057906.

It is an arithmetic number, because the mean of its divisors is an integer number (5547625965).

Almost surely, 2^61992518368 is an apocalyptic number.

It is an amenable number.

61992518368 is an abundant number, since it is smaller than the sum of its proper divisors (71150504792).

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

61992518368 is a wasteful number, since it uses less digits than its factorization.

61992518368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176115130 (or 176115122 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 58.

The spelling of 61992518368 in words is "sixty-one billion, nine hundred ninety-two million, five hundred eighteen thousand, three hundred sixty-eight".