18012906800 has 60 divisors (see below), whose sum is σ = 49458303216. Its totient is φ = 6175852800.

The previous prime is 18012906781. The next prime is 18012906827. The reversal of 18012906800 is 860921081.

It is a super-2 number, since 2×18012906800² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 3213791 + ... + 3219390.

Almost surely, 2^18012906800 is an apocalyptic number.

18012906800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18012906800 is an abundant number, since it is smaller than the sum of its proper divisors (31445396416).

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

18012906800 is a wasteful number, since it uses less digits than its factorization.

18012906800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6433206 (or 6433195 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The spelling of 18012906800 in words is "eighteen billion, twelve million, nine hundred six thousand, eight hundred".