61206777608 has 24 divisors (see below), whose sum is σ = 117256453950. Its totient is φ = 29952244224.

The previous prime is 61206777559. The next prime is 61206777629. The reversal of 61206777608 is 80677760216.

It can be written as a sum of positive squares in only one way, i.e., 53776682404 + 7430095204 = 231898^2 + 86198^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1714073 + ... + 1749416.

Almost surely, 2^61206777608 is an apocalyptic number.

It is an amenable number.

61206777608 is a deficient number, since it is larger than the sum of its proper divisors (56049676342).

61206777608 is a wasteful number, since it uses less digits than its factorization.

61206777608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463589 (or 3463538 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 50.

The spelling of 61206777608 in words is "sixty-one billion, two hundred six million, seven hundred seventy-seven thousand, six hundred eight".