13103736421 has 4 divisors (see below), whose sum is σ = 13112143200. Its totient is φ = 13095329644.

The previous prime is 13103736419. The next prime is 13103736427. The reversal of 13103736421 is 12463730131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13103736421 - 2¹ = 13103736419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13103736427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4201051 + ... + 4204168.

It is an arithmetic number, because the mean of its divisors is an integer number (3278035800).

Almost surely, 2^13103736421 is an apocalyptic number.

It is an amenable number.

13103736421 is a deficient number, since it is larger than the sum of its proper divisors (8406779).

13103736421 is an equidigital number, since it uses as much as digits as its factorization.

13103736421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8406778.

The product of its (nonzero) digits is 9072, while the sum is 31.

The spelling of 13103736421 in words is "thirteen billion, one hundred three million, seven hundred thirty-six thousand, four hundred twenty-one".