13480660021 has 4 divisors (see below), whose sum is σ = 13670528544. Its totient is φ = 13290791500.

The previous prime is 13480659989. The next prime is 13480660033. The reversal of 13480660021 is 12006608431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13480660021 - 2⁵ = 13480659989 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 (13480660091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94934155 + ... + 94934296.

It is an arithmetic number, because the mean of its divisors is an integer number (3417632136).

Almost surely, 2^13480660021 is an apocalyptic number.

It is an amenable number.

13480660021 is a deficient number, since it is larger than the sum of its proper divisors (189868523).

13480660021 is an equidigital number, since it uses as much as digits as its factorization.

13480660021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189868522.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 13480660021 in words is "thirteen billion, four hundred eighty million, six hundred sixty thousand, twenty-one".