18380696256 has 280 divisors, whose sum is σ = 59249005200. Its totient is φ = 5600544768.

The previous prime is 18380696203. The next prime is 18380696267. The reversal of 18380696256 is 65269608381.

It is a happy number.

18380696256 is a `hidden beast` number, since 1 + 8 + 3 + 8 + 0 + 6 + 9 + 625 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7209670 + ... + 7212218.

It is an arithmetic number, because the mean of its divisors is an integer number (211603590).

Almost surely, 2^18380696256 is an apocalyptic number.

18380696256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18380696256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29624502600).

18380696256 is an abundant number, since it is smaller than the sum of its proper divisors (40868308944).

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

18380696256 is a wasteful number, since it uses less digits than its factorization.

18380696256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2693 (or 2674 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 18380696256 in words is "eighteen billion, three hundred eighty million, six hundred ninety-six thousand, two hundred fifty-six".