15498422122 has 4 divisors (see below), whose sum is σ = 23247633186. Its totient is φ = 7749211060.

The previous prime is 15498422117. The next prime is 15498422123. The reversal of 15498422122 is 22122489451.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15197711841 + 300710281 = 123279^2 + 17341^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (15498422123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3874605529 + ... + 3874605532.

Almost surely, 2^15498422122 is an apocalyptic number.

15498422122 is a deficient number, since it is larger than the sum of its proper divisors (7749211064).

15498422122 is an equidigital number, since it uses as much as digits as its factorization.

15498422122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7749211063.

The product of its digits is 92160, while the sum is 40.

The spelling of 15498422122 in words is "fifteen billion, four hundred ninety-eight million, four hundred twenty-two thousand, one hundred twenty-two".