77223372056 has 16 divisors (see below), whose sum is σ = 144797199000. Its totient is φ = 38610785664.

The previous prime is 77223372053. The next prime is 77223372073. The reversal of 77223372056 is 65027332277.

It is a junction number, because it is equal to n+sod(n) for n = 77223371998 and 77223372016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77223372053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377471 + ... + 544913.

Almost surely, 2^77223372056 is an apocalyptic number.

It is an amenable number.

77223372056 is a deficient number, since it is larger than the sum of its proper divisors (67573826944).

77223372056 is a wasteful number, since it uses less digits than its factorization.

77223372056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225098 (or 225094 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 44.

The spelling of 77223372056 in words is "seventy-seven billion, two hundred twenty-three million, three hundred seventy-two thousand, fifty-six".