12400401052 has 24 divisors (see below), whose sum is σ = 24744693456. Its totient is φ = 5386599168.

The previous prime is 12400400989. The next prime is 12400401113. The reversal of 12400401052 is 25010400421.

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, 7012918 + ... + 7014685.

It is an arithmetic number, because the mean of its divisors is an integer number (1031028894).

Almost surely, 2^12400401052 is an apocalyptic number.

It is an amenable number.

12400401052 is a deficient number, since it is larger than the sum of its proper divisors (12344292404).

12400401052 is a wasteful number, since it uses less digits than its factorization.

12400401052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14027637 (or 14027635 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 12400401052 its reverse (25010400421), we get a palindrome (37410801473).

The spelling of 12400401052 in words is "twelve billion, four hundred million, four hundred one thousand, fifty-two".