15552123321105 has 96 divisors (see below), whose sum is σ = 31934889492480. Its totient is φ = 6851413537920.

The previous prime is 15552123321101. The next prime is 15552123321131. The reversal of 15552123321105 is 50112332125551.

15552123321105 is a `hidden beast` number, since 1 + 5 + 5 + 5 + 212 + 332 + 1 + 105 = 666.

It is not a de Polignac number, because 15552123321105 - 2² = 15552123321101 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15552123321105.

It is not an unprimeable number, because it can be changed into a prime (15552123321101) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 998047 + ... + 5665716.

It is an arithmetic number, because the mean of its divisors is an integer number (332655098880).

Almost surely, 2^{15552123321105} is an apocalyptic number.

15552123321105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15552123321105 is an abundant number, since it is smaller than the sum of its proper divisors (16382766171375).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15552123321105 is a wasteful number, since it uses less digits than its factorization.

15552123321105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6664051 (or 6664048 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

Adding to 15552123321105 its reverse (50112332125551), we get a palindrome (65664455446656).

The spelling of 15552123321105 in words is "fifteen trillion, five hundred fifty-two billion, one hundred twenty-three million, three hundred twenty-one thousand, one hundred five".