13149923901 has 4 divisors (see below), whose sum is σ = 17533231872. Its totient is φ = 8766615932.

The previous prime is 13149923887. The next prime is 13149923909. The reversal of 13149923901 is 10932994131.

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 13149923901 - 2²¹ = 13147826749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13149923909) 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, 2191653981 + ... + 2191653986.

It is an arithmetic number, because the mean of its divisors is an integer number (4383307968).

Almost surely, 2^13149923901 is an apocalyptic number.

It is an amenable number.

13149923901 is a deficient number, since it is larger than the sum of its proper divisors (4383307971).

13149923901 is an equidigital number, since it uses as much as digits as its factorization.

13149923901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4383307970.

The product of its (nonzero) digits is 52488, while the sum is 42.

The spelling of 13149923901 in words is "thirteen billion, one hundred forty-nine million, nine hundred twenty-three thousand, nine hundred one".