15535542122 has 16 divisors (see below), whose sum is σ = 23352632160. Its totient is φ = 7751349648.

The previous prime is 15535542053. The next prime is 15535542137. The reversal of 15535542122 is 22124553551.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 2245793 + ... + 2252699.

It is an arithmetic number, because the mean of its divisors is an integer number (1459539510).

Almost surely, 2^15535542122 is an apocalyptic number.

15535542122 is a deficient number, since it is larger than the sum of its proper divisors (7817090038).

15535542122 is a wasteful number, since it uses less digits than its factorization.

15535542122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9125.

The product of its digits is 60000, while the sum is 35.

The spelling of 15535542122 in words is "fifteen billion, five hundred thirty-five million, five hundred forty-two thousand, one hundred twenty-two".