56555671678 has 8 divisors (see below), whose sum is σ = 92545644600. Its totient is φ = 25707123480.

The previous prime is 56555671649. The next prime is 56555671721. The reversal of 56555671678 is 87617655565.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 1285356153 + ... + 1285356196.

It is an arithmetic number, because the mean of its divisors is an integer number (11568205575).

Almost surely, 2^56555671678 is an apocalyptic number.

56555671678 is a deficient number, since it is larger than the sum of its proper divisors (35989972922).

56555671678 is a wasteful number, since it uses less digits than its factorization.

56555671678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570712362.

The product of its digits is 52920000, while the sum is 61.

The spelling of 56555671678 in words is "fifty-six billion, five hundred fifty-five million, six hundred seventy-one thousand, six hundred seventy-eight".