13215402402345 has 64 divisors (see below), whose sum is σ = 27601399929600. Its totient is φ = 5914585681920.

The previous prime is 13215402402259. The next prime is 13215402402437. The reversal of 13215402402345 is 54320420451231.

It is a happy number.

13215402402345 is a `hidden beast` number, since 1 + 3 + 2 + 15 + 402 + 4 + 0 + 234 + 5 = 666.

It is not a de Polignac number, because 13215402402345 - 2⁷ = 13215402402217 is a prime.

It is a super-2 number, since 2×13215402402345² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 342259960 + ... + 342298569.

It is an arithmetic number, because the mean of its divisors is an integer number (431271873900).

Almost surely, 2^{13215402402345} is an apocalyptic number.

13215402402345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13215402402345 is an abundant number, since it is smaller than the sum of its proper divisors (14385997527255).

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

13215402402345 is a wasteful number, since it uses less digits than its factorization.

13215402402345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684558567 (or 684558561 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 13215402402345 its reverse (54320420451231), we get a palindrome (67535822853576).

The spelling of 13215402402345 in words is "thirteen trillion, two hundred fifteen billion, four hundred two million, four hundred two thousand, three hundred forty-five".