61606830874 has 4 divisors (see below), whose sum is σ = 92410246314. Its totient is φ = 30803415436.

The previous prime is 61606830863. The next prime is 61606830881. The reversal of 61606830874 is 47803860616.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 61210223649 + 396607225 = 247407^2 + 19915^2 .

It is a super-2 number, since 2×61606830874² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15401707717 + ... + 15401707720.

Almost surely, 2^61606830874 is an apocalyptic number.

61606830874 is a deficient number, since it is larger than the sum of its proper divisors (30803415440).

61606830874 is a wasteful number, since it uses less digits than its factorization.

61606830874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30803415439.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 61606830874 in words is "sixty-one billion, six hundred six million, eight hundred thirty thousand, eight hundred seventy-four".