15150020561 has 16 divisors (see below), whose sum is σ = 16670997504. Its totient is φ = 13680145344.

The previous prime is 15150020533. The next prime is 15150020569. The reversal of 15150020561 is 16502005151.

It is a cyclic number.

It is not a de Polignac number, because 15150020561 - 2⁶ = 15150020497 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 15150020561.

It is not an unprimeable number, because it can be changed into a prime (15150020569) 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, 1490051 + ... + 1500183.

It is an arithmetic number, because the mean of its divisors is an integer number (1041937344).

Almost surely, 2^15150020561 is an apocalyptic number.

It is an amenable number.

15150020561 is a deficient number, since it is larger than the sum of its proper divisors (1520976943).

15150020561 is a wasteful number, since it uses less digits than its factorization.

15150020561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12640.

The product of its (nonzero) digits is 1500, while the sum is 26.

The spelling of 15150020561 in words is "fifteen billion, one hundred fifty million, twenty thousand, five hundred sixty-one".