13215002534 has 16 divisors (see below), whose sum is σ = 20068458480. Its totient is φ = 6525573120.

The previous prime is 13215002503. The next prime is 13215002597. The reversal of 13215002534 is 43520051231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513494 + ... + 538614.

It is an arithmetic number, because the mean of its divisors is an integer number (1254278655).

Almost surely, 2^13215002534 is an apocalyptic number.

13215002534 is a deficient number, since it is larger than the sum of its proper divisors (6853455946).

13215002534 is a wasteful number, since it uses less digits than its factorization.

13215002534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28375.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 13215002534 its reverse (43520051231), we get a palindrome (56735053765).

The spelling of 13215002534 in words is "thirteen billion, two hundred fifteen million, two thousand, five hundred thirty-four".