18063397356 has 48 divisors (see below), whose sum is σ = 44424965760. Its totient is φ = 5696680320.

The previous prime is 18063397333. The next prime is 18063397357. The reversal of 18063397356 is 65379336081.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18063397299 and 18063397308.

It is not an unprimeable number, because it can be changed into a prime (18063397357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121455 + ... + 225561.

It is an arithmetic number, because the mean of its divisors is an integer number (925520120).

Almost surely, 2^18063397356 is an apocalyptic number.

It is an amenable number.

18063397356 is an abundant number, since it is smaller than the sum of its proper divisors (26361568404).

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

18063397356 is a wasteful number, since it uses less digits than its factorization.

18063397356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104894 (or 104892 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 51.

The spelling of 18063397356 in words is "eighteen billion, sixty-three million, three hundred ninety-seven thousand, three hundred fifty-six".