13404615121 has 24 divisors (see below), whose sum is σ = 14416889760. Its totient is φ = 12426857280.

The previous prime is 13404615023. The next prime is 13404615131. The reversal of 13404615121 is 12151640431.

It is a de Polignac number, because none of the positive numbers 2^k-13404615121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13404615121.

It is not an unprimeable number, because it can be changed into a prime (13404615131) 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 23 ways as a sum of consecutive naturals, for example, 57530421 + ... + 57530653.

It is an arithmetic number, because the mean of its divisors is an integer number (600703740).

Almost surely, 2^13404615121 is an apocalyptic number.

It is an amenable number.

13404615121 is a deficient number, since it is larger than the sum of its proper divisors (1012274639).

13404615121 is an equidigital number, since it uses as much as digits as its factorization.

13404615121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 13404615121 in words is "thirteen billion, four hundred four million, six hundred fifteen thousand, one hundred twenty-one".