15422142118 has 4 divisors (see below), whose sum is σ = 23133213180. Its totient is φ = 7711071058.

The previous prime is 15422142097. The next prime is 15422142143. The reversal of 15422142118 is 81124122451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81124122451 = 17 ⋅4772007203.

It is a self number, because there is not a number n which added to its sum of digits gives 15422142118.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3855535528 + ... + 3855535531.

It is an arithmetic number, because the mean of its divisors is an integer number (5783303295).

Almost surely, 2^15422142118 is an apocalyptic number.

15422142118 is a deficient number, since it is larger than the sum of its proper divisors (7711071062).

15422142118 is an equidigital number, since it uses as much as digits as its factorization.

15422142118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7711071061.

The product of its digits is 5120, while the sum is 31.

Adding to 15422142118 its reverse (81124122451), we get a palindrome (96546264569).

The spelling of 15422142118 in words is "fifteen billion, four hundred twenty-two million, one hundred forty-two thousand, one hundred eighteen".