15543426340023 has 16 divisors (see below), whose sum is σ = 20761805618400. Its totient is φ = 10343670220800.

The previous prime is 15543426340019. The next prime is 15543426340027. The reversal of 15543426340023 is 32004362434551.

It is an interprime number because it is at equal distance from previous prime (15543426340019) and next prime (15543426340027).

It is not a de Polignac number, because 15543426340023 - 2² = 15543426340019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15543426340027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13114983 + ... + 14250951.

It is an arithmetic number, because the mean of its divisors is an integer number (1297612851150).

Almost surely, 2^{15543426340023} is an apocalyptic number.

15543426340023 is a deficient number, since it is larger than the sum of its proper divisors (5218379278377).

15543426340023 is a wasteful number, since it uses less digits than its factorization.

15543426340023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144162.

The product of its (nonzero) digits is 1036800, while the sum is 42.

Adding to 15543426340023 its reverse (32004362434551), we get a palindrome (47547788774574).

The spelling of 15543426340023 in words is "fifteen trillion, five hundred forty-three billion, four hundred twenty-six million, three hundred forty thousand, twenty-three".