61959579074 has 16 divisors (see below), whose sum is σ = 98411222808. Its totient is φ = 29156017152.

The previous prime is 61959578971. The next prime is 61959579161. The reversal of 61959579074 is 47097595916.

It can be written as a sum of positive squares in 4 ways, for example, as 55152174025 + 6807405049 = 234845^2 + 82507^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61959578998 and 61959579016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1036382 + ... + 1094534.

Almost surely, 2^61959579074 is an apocalyptic number.

61959579074 is a deficient number, since it is larger than the sum of its proper divisors (36451643734).

61959579074 is a wasteful number, since it uses less digits than its factorization.

61959579074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89509.

The product of its (nonzero) digits is 21432600, while the sum is 62.

The spelling of 61959579074 in words is "sixty-one billion, nine hundred fifty-nine million, five hundred seventy-nine thousand, seventy-four".