15412453123 has 4 divisors (see below), whose sum is σ = 15424411320. Its totient is φ = 15400494928.

The previous prime is 15412453109. The next prime is 15412453141. The reversal of 15412453123 is 32135421451.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15412453123 is a prime.

It is a super-2 number, since 2×15412453123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15412453103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5977165 + ... + 5979742.

It is an arithmetic number, because the mean of its divisors is an integer number (3856102830).

Almost surely, 2^15412453123 is an apocalyptic number.

15412453123 is a deficient number, since it is larger than the sum of its proper divisors (11958197).

15412453123 is a wasteful number, since it uses less digits than its factorization.

15412453123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11958196.

The product of its digits is 14400, while the sum is 31.

Adding to 15412453123 its reverse (32135421451), we get a palindrome (47547874574).

The spelling of 15412453123 in words is "fifteen billion, four hundred twelve million, four hundred fifty-three thousand, one hundred twenty-three".