61779095604 has 30 divisors (see below), whose sum is σ = 161502760034. Its totient is φ = 20593031760.

The previous prime is 61779095603. The next prime is 61779095617. The reversal of 61779095604 is 40659097716.

61779095604 is a `hidden beast` number, since 6 + 1 + 7 + 79 + 0 + 9 + 560 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 45381780900 + 16397314704 = 213030^2 + 128052^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61779095603) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 95337787 + ... + 95338434.

Almost surely, 2^61779095604 is an apocalyptic number.

It is an amenable number.

61779095604 is an abundant number, since it is smaller than the sum of its proper divisors (99723664430).

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

61779095604 is a wasteful number, since it uses less digits than its factorization.

61779095604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190676237 (or 190676226 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The spelling of 61779095604 in words is "sixty-one billion, seven hundred seventy-nine million, ninety-five thousand, six hundred four".