18855354056 has 48 divisors (see below), whose sum is σ = 44864558640. Its totient is φ = 7346240160.

The previous prime is 18855354053. The next prime is 18855354071. The reversal of 18855354056 is 65045355881.

It is a super-2 number, since 2×18855354056² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18855353995 and 18855354013.

It is not an unprimeable number, because it can be changed into a prime (18855354053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2182070 + ... + 2190693.

It is an arithmetic number, because the mean of its divisors is an integer number (934678305).

Almost surely, 2^18855354056 is an apocalyptic number.

It is an amenable number.

18855354056 is an abundant number, since it is smaller than the sum of its proper divisors (26009204584).

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

18855354056 is a wasteful number, since it uses less digits than its factorization.

18855354056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4372794 (or 4372783 counting only the distinct ones).

The product of its (nonzero) digits is 2880000, while the sum is 50.

The spelling of 18855354056 in words is "eighteen billion, eight hundred fifty-five million, three hundred fifty-four thousand, fifty-six".