15105222222400 has 42 divisors (see below), whose sum is σ = 37168287434930. Its totient is φ = 6042088888320.

The previous prime is 15105222222383. The next prime is 15105222222413. The reversal of 15105222222400 is 422222250151.

It can be written as a sum of positive squares in 3 ways, for example, as 5407543296 + 15099814679104 = 73536^2 + 3885848^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4720380345 + ... + 4720383544.

Almost surely, 2^{15105222222400} is an apocalyptic number.

15105222222400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15105222222400 is an abundant number, since it is smaller than the sum of its proper divisors (22063065212530).

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

15105222222400 is an equidigital number, since it uses as much as digits as its factorization.

15105222222400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9440763911 (or 9440763896 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 15105222222400 its reverse (422222250151), we get a palindrome (15527444472551).

The spelling of 15105222222400 in words is "fifteen trillion, one hundred five billion, two hundred twenty-two million, two hundred twenty-two thousand, four hundred".