77432401276 has 12 divisors (see below), whose sum is σ = 139877886400. Its totient is φ = 37467290880.

The previous prime is 77432401219. The next prime is 77432401283. The reversal of 77432401276 is 67210423477.

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, 312227301 + ... + 312227548.

Almost surely, 2^77432401276 is an apocalyptic number.

It is an amenable number.

77432401276 is a deficient number, since it is larger than the sum of its proper divisors (62445485124).

77432401276 is a wasteful number, since it uses less digits than its factorization.

77432401276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624454884 (or 624454882 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 43.

The spelling of 77432401276 in words is "seventy-seven billion, four hundred thirty-two million, four hundred one thousand, two hundred seventy-six".