10400121418 has 32 divisors (see below), whose sum is σ = 16335723600. Its totient is φ = 4961149440.

The previous prime is 10400121401. The next prime is 10400121437. The reversal of 10400121418 is 81412100401.

It can be written as a sum of positive squares in 8 ways, for example, as 2644324929 + 7755796489 = 51423^2 + 88067^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1373908 + ... + 1381456.

Almost surely, 2^10400121418 is an apocalyptic number.

10400121418 is a deficient number, since it is larger than the sum of its proper divisors (5935602182).

10400121418 is a wasteful number, since it uses less digits than its factorization.

10400121418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7962.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 10400121418 its reverse (81412100401), we get a palindrome (91812221819).

The spelling of 10400121418 in words is "ten billion, four hundred million, one hundred twenty-one thousand, four hundred eighteen".