61987712439982 has 48 divisors (see below), whose sum is σ = 110019856677120. Its totient is φ = 26110103499312.

The previous prime is 61987712439973. The next prime is 61987712440013. The reversal of 61987712439982 is 28993421778916.

It is a junction number, because it is equal to n+sod(n) for n = 61987712439899 and 61987712439908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24966843 + ... + 27337129.

It is an arithmetic number, because the mean of its divisors is an integer number (2292080347440).

Almost surely, 2^{61987712439982} is an apocalyptic number.

61987712439982 is a deficient number, since it is larger than the sum of its proper divisors (48032144237138).

61987712439982 is a wasteful number, since it uses less digits than its factorization.

61987712439982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374885 (or 2374878 counting only the distinct ones).

The product of its digits is 658409472, while the sum is 76.

The spelling of 61987712439982 in words is "sixty-one trillion, nine hundred eighty-seven billion, seven hundred twelve million, four hundred thirty-nine thousand, nine hundred eighty-two".