12000400488 has 24 divisors (see below), whose sum is σ = 32501084850. Its totient is φ = 4000133472.

The previous prime is 12000400471. The next prime is 12000400499. The reversal of 12000400488 is 88400400021.

It can be written as a sum of positive squares in only one way, i.e., 11784839364 + 215561124 = 108558^2 + 14682^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×12000400488² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83336043 + ... + 83336186.

Almost surely, 2^12000400488 is an apocalyptic number.

12000400488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12000400488 is an abundant number, since it is smaller than the sum of its proper divisors (20500684362).

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

12000400488 is a wasteful number, since it uses less digits than its factorization.

12000400488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166672241 (or 166672234 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The spelling of 12000400488 in words is "twelve billion, four hundred thousand, four hundred eighty-eight".