61998949754932 has 12 divisors (see below), whose sum is σ = 113215473465696. Its totient is φ = 29651671621880.

The previous prime is 61998949754893. The next prime is 61998949755007. The reversal of 61998949754932 is 23945794989916.

It is a self number, because there is not a number n which added to its sum of digits gives 61998949754932.

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, 336950813794 + ... + 336950813977.

It is an arithmetic number, because the mean of its divisors is an integer number (9434622788808).

Almost surely, 2^{61998949754932} is an apocalyptic number.

It is an amenable number.

61998949754932 is a deficient number, since it is larger than the sum of its proper divisors (51216523710764).

61998949754932 is a wasteful number, since it uses less digits than its factorization.

61998949754932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673901627798 (or 673901627796 counting only the distinct ones).

The product of its digits is 9523422720, while the sum is 85.

The spelling of 61998949754932 in words is "sixty-one trillion, nine hundred ninety-eight billion, nine hundred forty-nine million, seven hundred fifty-four thousand, nine hundred thirty-two".