15320566242 has 12 divisors (see below), whose sum is σ = 33194560230. Its totient is φ = 5106855408.

The previous prime is 15320566201. The next prime is 15320566249. The reversal of 15320566242 is 24266502351.

15320566242 is a `hidden beast` number, since 1 + 5 + 3 + 20 + 5 + 6 + 624 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13018581801 + 2301984441 = 114099^2 + 47979^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15320566197 and 15320566206.

It is not an unprimeable number, because it can be changed into a prime (15320566249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 425571267 + ... + 425571302.

Almost surely, 2^15320566242 is an apocalyptic number.

15320566242 is an abundant number, since it is smaller than the sum of its proper divisors (17873993988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15320566242 is a wasteful number, since it uses less digits than its factorization.

15320566242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851142577 (or 851142574 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 15320566242 in words is "fifteen billion, three hundred twenty million, five hundred sixty-six thousand, two hundred forty-two".