18970700056 has 48 divisors (see below), whose sum is σ = 45139013640. Its totient is φ = 7391180160.

The previous prime is 18970700011. The next prime is 18970700071. The reversal of 18970700056 is 65000707981.

It is a super-2 number, since 2×18970700056² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18970699985 and 18970700021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2195445 + ... + 2204068.

Almost surely, 2^18970700056 is an apocalyptic number.

It is an amenable number.

18970700056 is an abundant number, since it is smaller than the sum of its proper divisors (26168313584).

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

18970700056 is a wasteful number, since it uses less digits than its factorization.

18970700056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4399544 (or 4399533 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 43.

The spelling of 18970700056 in words is "eighteen billion, nine hundred seventy million, seven hundred thousand, fifty-six".