12400047984 has 40 divisors (see below), whose sum is σ = 32899231120. Its totient is φ = 4021636608.

The previous prime is 12400047941. The next prime is 12400047991. The reversal of 12400047984 is 48974000421.

It is a super-2 number, since 2×12400047984² (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 7 ways as a sum of consecutive naturals, for example, 3489229 + ... + 3492780.

It is an arithmetic number, because the mean of its divisors is an integer number (822480778).

Almost surely, 2^12400047984 is an apocalyptic number.

It is an amenable number.

12400047984 is an abundant number, since it is smaller than the sum of its proper divisors (20499183136).

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

12400047984 is a wasteful number, since it uses less digits than its factorization.

12400047984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6982057 (or 6982051 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 12400047984 in words is "twelve billion, four hundred million, forty-seven thousand, nine hundred eighty-four".