15240221005 has 16 divisors (see below), whose sum is σ = 19771102080. Its totient is φ = 11238305472.

The previous prime is 15240220981. The next prime is 15240221011. The reversal of 15240221005 is 50012204251.

It is a cyclic number.

It is not a de Polignac number, because 15240221005 - 2⁵ = 15240220973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2164369 + ... + 2171398.

It is an arithmetic number, because the mean of its divisors is an integer number (1235693880).

Almost surely, 2^15240221005 is an apocalyptic number.

It is an amenable number.

15240221005 is a deficient number, since it is larger than the sum of its proper divisors (4530881075).

15240221005 is a wasteful number, since it uses less digits than its factorization.

15240221005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4335828.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 15240221005 its reverse (50012204251), we get a palindrome (65252425256).

The spelling of 15240221005 in words is "fifteen billion, two hundred forty million, two hundred twenty-one thousand, five".