15413250021 has 16 divisors (see below), whose sum is σ = 22166089344. Its totient is φ = 9470401344.

The previous prime is 15413249993. The next prime is 15413250029. The reversal of 15413250021 is 12005231451.

It is a happy number.

It is not a de Polignac number, because 15413250021 - 2⁵ = 15413249989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15413249973 and 15413250000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15413250029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280186 + ... + 330651.

It is an arithmetic number, because the mean of its divisors is an integer number (1385380584).

Almost surely, 2^15413250021 is an apocalyptic number.

It is an amenable number.

15413250021 is a deficient number, since it is larger than the sum of its proper divisors (6752839323).

15413250021 is a wasteful number, since it uses less digits than its factorization.

15413250021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611500.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 15413250021 its reverse (12005231451), we get a palindrome (27418481472).

The spelling of 15413250021 in words is "fifteen billion, four hundred thirteen million, two hundred fifty thousand, twenty-one".