15215440105 has 16 divisors (see below), whose sum is σ = 18504105984. Its totient is φ = 12009695040.

The previous prime is 15215440099. The next prime is 15215440111. The reversal of 15215440105 is 50104451251.

15215440105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15215440099) and next prime (15215440111).

It is not a de Polignac number, because 15215440105 - 2²¹ = 15213342953 is a prime.

It is a super-2 number, since 2×15215440105² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 48744 + ... + 181126.

It is an arithmetic number, because the mean of its divisors is an integer number (1156506624).

Almost surely, 2^15215440105 is an apocalyptic number.

It is an amenable number.

15215440105 is a deficient number, since it is larger than the sum of its proper divisors (3288665879).

15215440105 is a wasteful number, since it uses less digits than its factorization.

15215440105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132696.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 15215440105 its reverse (50104451251), we get a palindrome (65319891356).

The spelling of 15215440105 in words is "fifteen billion, two hundred fifteen million, four hundred forty thousand, one hundred five".