12400401051 has 48 divisors (see below), whose sum is σ = 18935280000. Its totient is φ = 8107319808.

The previous prime is 12400400989. The next prime is 12400401113. The reversal of 12400401051 is 15010400421.

It is an interprime number because it is at equal distance from previous prime (12400400989) and next prime (12400401113).

It is not a de Polignac number, because 12400401051 - 2⁹ = 12400400539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12400401151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8271700 + ... + 8273198.

It is an arithmetic number, because the mean of its divisors is an integer number (394485000).

Almost surely, 2^12400401051 is an apocalyptic number.

12400401051 is a deficient number, since it is larger than the sum of its proper divisors (6534878949).

12400401051 is an equidigital number, since it uses as much as digits as its factorization.

12400401051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150 (or 2138 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 12400401051 its reverse (15010400421), we get a palindrome (27410801472).

The spelling of 12400401051 in words is "twelve billion, four hundred million, four hundred one thousand, fifty-one".