13453525421 has 8 divisors (see below), whose sum is σ = 15871440384. Its totient is φ = 11159606160.

The previous prime is 13453525409. The next prime is 13453525441. The reversal of 13453525421 is 12452535431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13453525421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13453525441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30998690 + ... + 30999123.

It is an arithmetic number, because the mean of its divisors is an integer number (1983930048).

Almost surely, 2^13453525421 is an apocalyptic number.

It is an amenable number.

13453525421 is a deficient number, since it is larger than the sum of its proper divisors (2417914963).

13453525421 is an equidigital number, since it uses as much as digits as its factorization.

13453525421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61997851.

The product of its digits is 72000, while the sum is 35.

The spelling of 13453525421 in words is "thirteen billion, four hundred fifty-three million, five hundred twenty-five thousand, four hundred twenty-one".