13215223735 has 32 divisors (see below), whose sum is σ = 18923673600. Its totient is φ = 8662397568.

The previous prime is 13215223663. The next prime is 13215223741. The reversal of 13215223735 is 53732251231.

It is a cyclic number.

It is not a de Polignac number, because 13215223735 - 2²³ = 13206835127 is a prime.

It is a super-2 number, since 2×13215223735² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13215223735.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1564734 + ... + 1573156.

It is an arithmetic number, because the mean of its divisors is an integer number (591364800).

Almost surely, 2^13215223735 is an apocalyptic number.

13215223735 is a deficient number, since it is larger than the sum of its proper divisors (5708449865).

13215223735 is a wasteful number, since it uses less digits than its factorization.

13215223735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10407.

The product of its digits is 37800, while the sum is 34.

Adding to 13215223735 its reverse (53732251231), we get a palindrome (66947474966).

The spelling of 13215223735 in words is "thirteen billion, two hundred fifteen million, two hundred twenty-three thousand, seven hundred thirty-five".