13215642350 has 12 divisors (see below), whose sum is σ = 24581094864. Its totient is φ = 5286256920.

The previous prime is 13215642343. The next prime is 13215642353. The reversal of 13215642350 is 5324651231.

It is a happy number.

It is a super-2 number, since 2×13215642350² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13215642353) 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, 132156374 + ... + 132156473.

It is an arithmetic number, because the mean of its divisors is an integer number (2048424572).

Almost surely, 2^13215642350 is an apocalyptic number.

13215642350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13215642350 is a deficient number, since it is larger than the sum of its proper divisors (11365452514).

13215642350 is a wasteful number, since it uses less digits than its factorization.

13215642350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264312859 (or 264312854 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 13215642350 in words is "thirteen billion, two hundred fifteen million, six hundred forty-two thousand, three hundred fifty".