13472413821 has 24 divisors (see below), whose sum is σ = 19655375064. Its totient is φ = 8891925120.

The previous prime is 13472413817. The next prime is 13472413831. The reversal of 13472413821 is 12831427431.

13472413821 is a `hidden beast` number, since 1 + 34 + 7 + 241 + 382 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2286178596 + 11186235225 = 47814^2 + 105765^2 .

It is not a de Polignac number, because 13472413821 - 2² = 13472413817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13472413831) 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, 374191 + ... + 408611.

It is an arithmetic number, because the mean of its divisors is an integer number (818973961).

Almost surely, 2^13472413821 is an apocalyptic number.

It is an amenable number.

13472413821 is a deficient number, since it is larger than the sum of its proper divisors (6182961243).

13472413821 is a wasteful number, since it uses less digits than its factorization.

13472413821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34861 (or 34858 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The spelling of 13472413821 in words is "thirteen billion, four hundred seventy-two million, four hundred thirteen thousand, eight hundred twenty-one".