13021353730 has 64 divisors (see below), whose sum is σ = 29505835008. Its totient is φ = 4019175360.

The previous prime is 13021353703. The next prime is 13021353743. The reversal of 13021353730 is 3735312031.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2782 + ... + 161401.

It is an arithmetic number, because the mean of its divisors is an integer number (461028672).

Almost surely, 2^13021353730 is an apocalyptic number.

13021353730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13021353730 is an abundant number, since it is smaller than the sum of its proper divisors (16484481278).

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

13021353730 is a wasteful number, since it uses less digits than its factorization.

13021353730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164311.

The product of its (nonzero) digits is 5670, while the sum is 28.

Adding to 13021353730 its reverse (3735312031), we get a palindrome (16756665761).

The spelling of 13021353730 in words is "thirteen billion, twenty-one million, three hundred fifty-three thousand, seven hundred thirty".