15403400013 has 16 divisors (see below), whose sum is σ = 20804532480. Its totient is φ = 10135684416.

The previous prime is 15403400009. The next prime is 15403400021. The reversal of 15403400013 is 31000430451.

It is not a de Polignac number, because 15403400013 - 2² = 15403400009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15403400713) 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 15 ways as a sum of consecutive naturals, for example, 891331 + ... + 908447.

It is an arithmetic number, because the mean of its divisors is an integer number (1300283280).

Almost surely, 2^15403400013 is an apocalyptic number.

It is an amenable number.

15403400013 is a deficient number, since it is larger than the sum of its proper divisors (5401132467).

15403400013 is a wasteful number, since it uses less digits than its factorization.

15403400013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20996.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 15403400013 its reverse (31000430451), we get a palindrome (46403830464).

It can be divided in two parts, 15403 and 400013, that added together give a triangular number (415416 = T₉₁₁).

The spelling of 15403400013 in words is "fifteen billion, four hundred three million, four hundred thousand, thirteen".