61611324154504 has 16 divisors (see below), whose sum is σ = 116000574008220. Its totient is φ = 30677837752320.

The previous prime is 61611324154489. The next prime is 61611324154537. The reversal of 61611324154504 is 40545142311616.

It can be written as a sum of positive squares in 2 ways, for example, as 59297731052004 + 2313593102500 = 7700502^2 + 1521050^2 .

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, 15978038569 + ... + 15978042424.

Almost surely, 2^{61611324154504} is an apocalyptic number.

It is an amenable number.

61611324154504 is a deficient number, since it is larger than the sum of its proper divisors (54389249853716).

61611324154504 is a wasteful number, since it uses less digits than its factorization.

61611324154504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31956081240 (or 31956081236 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 61611324154504 in words is "sixty-one trillion, six hundred eleven billion, three hundred twenty-four million, one hundred fifty-four thousand, five hundred four".