15553442122 has 8 divisors (see below), whose sum is σ = 24344518176. Its totient is φ = 7438602732.

The previous prime is 15553442101. The next prime is 15553442131. The reversal of 15553442122 is 22124435551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×15553442122⁴ (a number of 42 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169059108 + ... + 169059199.

It is an arithmetic number, because the mean of its divisors is an integer number (3043064772).

Almost surely, 2^15553442122 is an apocalyptic number.

15553442122 is a deficient number, since it is larger than the sum of its proper divisors (8791076054).

15553442122 is a wasteful number, since it uses less digits than its factorization.

15553442122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338118332.

The product of its digits is 48000, while the sum is 34.

Adding to 15553442122 its reverse (22124435551), we get a palindrome (37677877673).

The spelling of 15553442122 in words is "fifteen billion, five hundred fifty-three million, four hundred forty-two thousand, one hundred twenty-two".