15157944428723 has 4 divisors (see below), whose sum is σ = 15157970792928. Its totient is φ = 15157918064520.

The previous prime is 15157944428699. The next prime is 15157944428749. The reversal of 15157944428723 is 32782444975151.

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

It is a cyclic number.

It is not a de Polignac number, because 15157944428723 - 2¹⁰ = 15157944427699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15157944428773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12300011 + ... + 13476132.

It is an arithmetic number, because the mean of its divisors is an integer number (3789492698232).

Almost surely, 2^{15157944428723} is an apocalyptic number.

15157944428723 is a deficient number, since it is larger than the sum of its proper divisors (26364205).

15157944428723 is an equidigital number, since it uses as much as digits as its factorization.

15157944428723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26364204.

The product of its digits is 67737600, while the sum is 62.

The spelling of 15157944428723 in words is "fifteen trillion, one hundred fifty-seven billion, nine hundred forty-four million, four hundred twenty-eight thousand, seven hundred twenty-three".