15215242113 has 12 divisors (see below), whose sum is σ = 22030029840. Its totient is φ = 10119283416.

The previous prime is 15215242111. The next prime is 15215242121. The reversal of 15215242113 is 31124251251.

It is a happy number.

15215242113 is a `hidden beast` number, since 1 + 5 + 21 + 524 + 2 + 113 = 666.

It is not a de Polignac number, because 15215242113 - 2¹ = 15215242111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15215242111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2013631 + ... + 2021172.

It is an arithmetic number, because the mean of its divisors is an integer number (1835835820).

Almost surely, 2^15215242113 is an apocalyptic number.

It is an amenable number.

15215242113 is a deficient number, since it is larger than the sum of its proper divisors (6814787727).

15215242113 is a wasteful number, since it uses less digits than its factorization.

15215242113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035228 (or 4035225 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

Adding to 15215242113 its reverse (31124251251), we get a palindrome (46339493364).

The spelling of 15215242113 in words is "fifteen billion, two hundred fifteen million, two hundred forty-two thousand, one hundred thirteen".