18079678400 has 84 divisors (see below), whose sum is σ = 50842669968. Its totient is φ = 6198743040.

The previous prime is 18079678387. The next prime is 18079678439. The reversal of 18079678400 is 487697081.

It is a super-3 number, since 3×18079678400³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

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, 795929 + ... + 818328.

Almost surely, 2^18079678400 is an apocalyptic number.

18079678400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18079678400 is an abundant number, since it is smaller than the sum of its proper divisors (32762991568).

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

18079678400 is a wasteful number, since it uses less digits than its factorization.

18079678400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614286 (or 1614271 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 50.

The spelling of 18079678400 in words is "eighteen billion, seventy-nine million, six hundred seventy-eight thousand, four hundred".