13020457519321 has 24 divisors (see below), whose sum is σ = 15824813932224. Its totient is φ = 10492292884320.

The previous prime is 13020457519319. The next prime is 13020457519327. The reversal of 13020457519321 is 12391575402031.

It is not a de Polignac number, because 13020457519321 - 2¹ = 13020457519319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13020457519327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19335130 + ... + 19997203.

It is an arithmetic number, because the mean of its divisors is an integer number (659367247176).

Almost surely, 2^{13020457519321} is an apocalyptic number.

It is an amenable number.

13020457519321 is a deficient number, since it is larger than the sum of its proper divisors (2804356412903).

13020457519321 is a wasteful number, since it uses less digits than its factorization.

13020457519321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39332509 (or 39332490 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 13020457519321 in words is "thirteen trillion, twenty billion, four hundred fifty-seven million, five hundred nineteen thousand, three hundred twenty-one".