15427113021 has 6 divisors (see below), whose sum is σ = 22283607710. Its totient is φ = 10284742008.

The previous prime is 15427113007. The next prime is 15427113041. The reversal of 15427113021 is 12031172451.

15427113021 is a `hidden beast` number, since 1 + 542 + 7 + 113 + 0 + 2 + 1 = 666.

15427113021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9407060100 + 6020052921 = 96990^2 + 77589^2 .

It is not a de Polignac number, because 15427113021 - 2¹⁸ = 15426850877 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 (15427113001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 857061826 + ... + 857061843.

Almost surely, 2^15427113021 is an apocalyptic number.

It is an amenable number.

15427113021 is a deficient number, since it is larger than the sum of its proper divisors (6856494689).

15427113021 is a wasteful number, since it uses less digits than its factorization.

15427113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714123675 (or 1714123672 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

Adding to 15427113021 its reverse (12031172451), we get a palindrome (27458285472).

The spelling of 15427113021 in words is "fifteen billion, four hundred twenty-seven million, one hundred thirteen thousand, twenty-one".