15266042641 has 4 divisors (see below), whose sum is σ = 15437571300. Its totient is φ = 15094513984.

The previous prime is 15266042611. The next prime is 15266042647. The reversal of 15266042641 is 14624066251.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9351663616 + 5914379025 = 96704^2 + 76905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15266042641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15266042641.

It is not an unprimeable number, because it can be changed into a prime (15266042647) 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, 85764196 + ... + 85764373.

It is an arithmetic number, because the mean of its divisors is an integer number (3859392825).

Almost surely, 2^15266042641 is an apocalyptic number.

It is an amenable number.

15266042641 is a deficient number, since it is larger than the sum of its proper divisors (171528659).

15266042641 is an equidigital number, since it uses as much as digits as its factorization.

15266042641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171528658.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 15266042641 in words is "fifteen billion, two hundred sixty-six million, forty-two thousand, six hundred forty-one".