77954427196 has 12 divisors (see below), whose sum is σ = 136440277848. Its totient is φ = 38971490672.

The previous prime is 77954427139. The next prime is 77954427247. The reversal of 77954427196 is 69172445977.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1400011 + ... + 1454626.

It is an arithmetic number, because the mean of its divisors is an integer number (11370023154).

Almost surely, 2^77954427196 is an apocalyptic number.

It is an amenable number.

77954427196 is a deficient number, since it is larger than the sum of its proper divisors (58485850652).

77954427196 is a wasteful number, since it uses less digits than its factorization.

77954427196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861468 (or 2861466 counting only the distinct ones).

The product of its digits is 26671680, while the sum is 61.

The spelling of 77954427196 in words is "seventy-seven billion, nine hundred fifty-four million, four hundred twenty-seven thousand, one hundred ninety-six".