61981514705088 has 140 divisors (see below), whose sum is σ = 200435592876552. Its totient is φ = 18782277166080.

The previous prime is 61981514705041. The next prime is 61981514705129. The reversal of 61981514705088 is 88050741518916.

61981514705088 is a `hidden beast` number, since 6 + 1 + 9 + 8 + 1 + 51 + 4 + 70 + 508 + 8 = 666.

It is a super-2 number, since 2×61981514705088² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 543411645 + ... + 543525692.

Almost surely, 2^{61981514705088} is an apocalyptic number.

It is an amenable number.

61981514705088 is an abundant number, since it is smaller than the sum of its proper divisors (138454078171464).

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

61981514705088 is a wasteful number, since it uses less digits than its factorization.

61981514705088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086937372 (or 1086937353 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 63.

The spelling of 61981514705088 in words is "sixty-one trillion, nine hundred eighty-one billion, five hundred fourteen million, seven hundred five thousand, eighty-eight".