15123131553 has 8 divisors (see below), whose sum is σ = 20275580416. Its totient is φ = 10026385200.

The previous prime is 15123131531. The next prime is 15123131659. The reversal of 15123131553 is 35513132151.

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

It is not a de Polignac number, because 15123131553 - 2⁵ = 15123131521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15123131553.

It is not an unprimeable number, because it can be changed into a prime (15123131053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13924993 + ... + 13926078.

It is an arithmetic number, because the mean of its divisors is an integer number (2534447552).

Almost surely, 2^15123131553 is an apocalyptic number.

It is an amenable number.

15123131553 is a deficient number, since it is larger than the sum of its proper divisors (5152448863).

15123131553 is a wasteful number, since it uses less digits than its factorization.

15123131553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27851255.

The product of its digits is 6750, while the sum is 30.

The spelling of 15123131553 in words is "fifteen billion, one hundred twenty-three million, one hundred thirty-one thousand, five hundred fifty-three".