77405970196 has 24 divisors (see below), whose sum is σ = 137498711840. Its totient is φ = 38120762592.

The previous prime is 77405970181. The next prime is 77405970203. The reversal of 77405970196 is 69107950477.

It is a congruent number.

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, 3763990 + ... + 3784498.

Almost surely, 2^77405970196 is an apocalyptic number.

It is an amenable number.

77405970196 is a deficient number, since it is larger than the sum of its proper divisors (60092741644).

77405970196 is a wasteful number, since it uses less digits than its factorization.

77405970196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34663 (or 34661 counting only the distinct ones).

The product of its (nonzero) digits is 3333960, while the sum is 55.

The spelling of 77405970196 in words is "seventy-seven billion, four hundred five million, nine hundred seventy thousand, one hundred ninety-six".