77932422808 has 32 divisors (see below), whose sum is σ = 146752979760. Its totient is φ = 38798622720.

The previous prime is 77932422791. The next prime is 77932422817. The reversal of 77932422808 is 80822423977.

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, 1931416 + ... + 1971352.

Almost surely, 2^77932422808 is an apocalyptic number.

It is an amenable number.

77932422808 is a deficient number, since it is larger than the sum of its proper divisors (68820556952).

77932422808 is a wasteful number, since it uses less digits than its factorization.

77932422808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40987 (or 40983 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 77932422808 in words is "seventy-seven billion, nine hundred thirty-two million, four hundred twenty-two thousand, eight hundred eight".