13521320123430 has 64 divisors (see below), whose sum is σ = 37695033934848. Its totient is φ = 3039922085760.

The previous prime is 13521320123419. The next prime is 13521320123453. The reversal of 13521320123430 is 3432102312531.

13521320123430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 527751442 + ... + 527777061.

It is an arithmetic number, because the mean of its divisors is an integer number (588984905232).

Almost surely, 2^{13521320123430} is an apocalyptic number.

13521320123430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13521320123430 is an abundant number, since it is smaller than the sum of its proper divisors (24173713811418).

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

13521320123430 is a wasteful number, since it uses less digits than its factorization.

13521320123430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055528581.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 13521320123430 its reverse (3432102312531), we get a palindrome (16953422435961).

The spelling of 13521320123430 in words is "thirteen trillion, five hundred twenty-one billion, three hundred twenty million, one hundred twenty-three thousand, four hundred thirty".