61631879404 has 6 divisors (see below), whose sum is σ = 107855788964. Its totient is φ = 30815939700.

The previous prime is 61631879389. The next prime is 61631879423. The reversal of 61631879404 is 40497813616.

It is a super-3 number, since 3×61631879404³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7703984922 + ... + 7703984929.

Almost surely, 2^61631879404 is an apocalyptic number.

It is an amenable number.

61631879404 is a deficient number, since it is larger than the sum of its proper divisors (46223909560).

61631879404 is a wasteful number, since it uses less digits than its factorization.

61631879404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15407969855 (or 15407969853 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 61631879404 in words is "sixty-one billion, six hundred thirty-one million, eight hundred seventy-nine thousand, four hundred four".