15594840122 has 4 divisors (see below), whose sum is σ = 23392260186. Its totient is φ = 7797420060.

The previous prime is 15594840119. The next prime is 15594840187. The reversal of 15594840122 is 22104849551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22104849551 = 2161 ⋅10228991.

It can be written as a sum of positive squares in only one way, i.e., 11802866881 + 3791973241 = 108641^2 + 61579^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 15594840122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3898710029 + ... + 3898710032.

Almost surely, 2^15594840122 is an apocalyptic number.

15594840122 is a deficient number, since it is larger than the sum of its proper divisors (7797420064).

15594840122 is an equidigital number, since it uses as much as digits as its factorization.

15594840122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7797420063.

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 15594840122 in words is "fifteen billion, five hundred ninety-four million, eight hundred forty thousand, one hundred twenty-two".