61169679408 has 20 divisors (see below), whose sum is σ = 158021671928. Its totient is φ = 20389893120.

The previous prime is 61169679407. The next prime is 61169679419. The reversal of 61169679408 is 80497696116.

It is not an unprimeable number, because it can be changed into a prime (61169679407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 637184113 + ... + 637184208.

Almost surely, 2^61169679408 is an apocalyptic number.

It is an amenable number.

61169679408 is an abundant number, since it is smaller than the sum of its proper divisors (96851992520).

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

61169679408 is a wasteful number, since it uses less digits than its factorization.

61169679408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274368332 (or 1274368326 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 61169679408 in words is "sixty-one billion, one hundred sixty-nine million, six hundred seventy-nine thousand, four hundred eight".