61916531658370 has 8 divisors (see below), whose sum is σ = 111449756985084. Its totient is φ = 24766612663344.

The previous prime is 61916531658301. The next prime is 61916531658383. The reversal of 61916531658370 is 7385613561916.

It can be written as a sum of positive squares in 2 ways, for example, as 56820825885681 + 5095705772689 = 7537959^2 + 2257367^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 61916531658299 and 61916531658308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3095826582909 + ... + 3095826582928.

Almost surely, 2^{61916531658370} is an apocalyptic number.

61916531658370 is a deficient number, since it is larger than the sum of its proper divisors (49533225326714).

61916531658370 is a wasteful number, since it uses less digits than its factorization.

61916531658370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6191653165844.

The product of its (nonzero) digits is 24494400, while the sum is 61.

The spelling of 61916531658370 in words is "sixty-one trillion, nine hundred sixteen billion, five hundred thirty-one million, six hundred fifty-eight thousand, three hundred seventy".