13253921370 has 24 divisors (see below), whose sum is σ = 34460195796. Its totient is φ = 3534379008.

The previous prime is 13253921341. The next prime is 13253921383. The reversal of 13253921370 is 7312935231.

It is a happy number.

13253921370 is a `hidden beast` number, since 1 + 32 + 539 + 21 + 3 + 70 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13222010169 + 31911201 = 114987^2 + 5649^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73632807 + ... + 73632986.

Almost surely, 2^13253921370 is an apocalyptic number.

13253921370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13253921370 is an abundant number, since it is smaller than the sum of its proper divisors (21206274426).

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

13253921370 is a wasteful number, since it uses less digits than its factorization.

13253921370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147265806 (or 147265803 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The spelling of 13253921370 in words is "thirteen billion, two hundred fifty-three million, nine hundred twenty-one thousand, three hundred seventy".