77327204240 has 80 divisors (see below), whose sum is σ = 211216856256. Its totient is φ = 25955980800.

The previous prime is 77327204231. The next prime is 77327204327. The reversal of 77327204240 is 4240272377.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 77327204194 and 77327204203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3368246 + ... + 3391125.

Almost surely, 2^77327204240 is an apocalyptic number.

It is an amenable number.

77327204240 is an abundant number, since it is smaller than the sum of its proper divisors (133889652016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77327204240 is a wasteful number, since it uses less digits than its factorization.

77327204240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6759408 (or 6759402 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 38.

The spelling of 77327204240 in words is "seventy-seven billion, three hundred twenty-seven million, two hundred four thousand, two hundred forty".