13154137649 has 4 divisors (see below), whose sum is σ = 13257713664. Its totient is φ = 13050561636.

The previous prime is 13154137559. The next prime is 13154137663. The reversal of 13154137649 is 94673145131.

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 a de Polignac number, because none of the positive numbers 2^k-13154137649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13154137949) 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, 51787817 + ... + 51788070.

It is an arithmetic number, because the mean of its divisors is an integer number (3314428416).

Almost surely, 2^13154137649 is an apocalyptic number.

It is an amenable number.

13154137649 is a deficient number, since it is larger than the sum of its proper divisors (103576015).

13154137649 is a wasteful number, since it uses less digits than its factorization.

13154137649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103576014.

The product of its digits is 272160, while the sum is 44.

The spelling of 13154137649 in words is "thirteen billion, one hundred fifty-four million, one hundred thirty-seven thousand, six hundred forty-nine".