18555055351 has 36 divisors (see below), whose sum is σ = 22645695072. Its totient is φ = 15157606464.

The previous prime is 18555055327. The next prime is 18555055357. The reversal of 18555055351 is 15355055581.

It is not a de Polignac number, because 18555055351 - 2²⁹ = 18018184439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18555055298 and 18555055307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18555055357) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8112130 + ... + 8114416.

Almost surely, 2^18555055351 is an apocalyptic number.

18555055351 is a deficient number, since it is larger than the sum of its proper divisors (4090639721).

18555055351 is a wasteful number, since it uses less digits than its factorization.

18555055351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660 (or 2630 counting only the distinct ones).

The product of its (nonzero) digits is 375000, while the sum is 43.

The spelling of 18555055351 in words is "eighteen billion, five hundred fifty-five million, fifty-five thousand, three hundred fifty-one".