13601665253 has 24 divisors (see below), whose sum is σ = 15361606368. Its totient is φ = 11942480000.

The previous prime is 13601665193. The next prime is 13601665277. The reversal of 13601665253 is 35256610631.

It is not a de Polignac number, because 13601665253 - 2¹⁴ = 13601648869 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 (13601665153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1863950 + ... + 1871232.

It is an arithmetic number, because the mean of its divisors is an integer number (640066932).

Almost surely, 2^13601665253 is an apocalyptic number.

It is an amenable number.

13601665253 is a deficient number, since it is larger than the sum of its proper divisors (1759941115).

13601665253 is a wasteful number, since it uses less digits than its factorization.

13601665253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7477 (or 7436 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 38.

The spelling of 13601665253 in words is "thirteen billion, six hundred one million, six hundred sixty-five thousand, two hundred fifty-three".