15242635645 has 16 divisors (see below), whose sum is σ = 18616815360. Its totient is φ = 11978576064.

The previous prime is 15242635633. The next prime is 15242635649. The reversal of 15242635645 is 54653624251.

It is a cyclic number.

It is not a de Polignac number, because 15242635645 - 2¹¹ = 15242633597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15242635649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20127 + ... + 175756.

It is an arithmetic number, because the mean of its divisors is an integer number (1163550960).

Almost surely, 2^15242635645 is an apocalyptic number.

It is an amenable number.

15242635645 is a deficient number, since it is larger than the sum of its proper divisors (3374179715).

15242635645 is a wasteful number, since it uses less digits than its factorization.

15242635645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196164.

The product of its digits is 864000, while the sum is 43.

The spelling of 15242635645 in words is "fifteen billion, two hundred forty-two million, six hundred thirty-five thousand, six hundred forty-five".