12147117400 has 72 divisors (see below), whose sum is σ = 31042974060. Its totient is φ = 4417124800.

The previous prime is 12147117391. The next prime is 12147117413. The reversal of 12147117400 is 471174121.

It is a super-2 number, since 2×12147117400² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 226774 + ... + 275173.

Almost surely, 2^12147117400 is an apocalyptic number.

12147117400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12147117400 is an abundant number, since it is smaller than the sum of its proper divisors (18895856660).

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

12147117400 is a wasteful number, since it uses less digits than its factorization.

12147117400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501985 (or 501965 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 28.

The spelling of 12147117400 in words is "twelve billion, one hundred forty-seven million, one hundred seventeen thousand, four hundred".