15105389056 has 40 divisors (see below), whose sum is σ = 30631811760. Its totient is φ = 7439950848.

The previous prime is 15105389029. The next prime is 15105389071. The reversal of 15105389056 is 65098350151.

It is a super-2 number, since 2×15105389056² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185866 + ... + 254473.

It is an arithmetic number, because the mean of its divisors is an integer number (765795294).

Almost surely, 2^15105389056 is an apocalyptic number.

15105389056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15105389056 is an abundant number, since it is smaller than the sum of its proper divisors (15526422704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15105389056 is an frugal number, since it uses more digits than its factorization.

15105389056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440424 (or 440408 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 15105389056 in words is "fifteen billion, one hundred five million, three hundred eighty-nine thousand, fifty-six".