13501332551 has 12 divisors (see below), whose sum is σ = 15785367048. Its totient is φ = 11513818512.

The previous prime is 13501332541. The next prime is 13501332577. The reversal of 13501332551 is 15523310531.

It is a happy number.

It is not a de Polignac number, because 13501332551 - 2¹⁰ = 13501331527 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 (13501332541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 689681 + ... + 708986.

It is an arithmetic number, because the mean of its divisors is an integer number (1315447254).

Almost surely, 2^13501332551 is an apocalyptic number.

13501332551 is a deficient number, since it is larger than the sum of its proper divisors (2284034497).

13501332551 is a wasteful number, since it uses less digits than its factorization.

13501332551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398878 (or 1398871 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 29.

The spelling of 13501332551 in words is "thirteen billion, five hundred one million, three hundred thirty-two thousand, five hundred fifty-one".