15662740201 has 4 divisors (see below), whose sum is σ = 15786068992. Its totient is φ = 15539411412.

The previous prime is 15662740199. The next prime is 15662740229. The reversal of 15662740201 is 10204726651.

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 15662740201 - 2¹ = 15662740199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15662740601) 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, 61664205 + ... + 61664458.

It is an arithmetic number, because the mean of its divisors is an integer number (3946517248).

Almost surely, 2^15662740201 is an apocalyptic number.

It is an amenable number.

15662740201 is a deficient number, since it is larger than the sum of its proper divisors (123328791).

15662740201 is a wasteful number, since it uses less digits than its factorization.

15662740201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123328790.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 15662740201 in words is "fifteen billion, six hundred sixty-two million, seven hundred forty thousand, two hundred one".