23154151543 has 4 divisors (see below), whose sum is σ = 24160853808. Its totient is φ = 22147449280.

The previous prime is 23154151541. The next prime is 23154151547. The reversal of 23154151543 is 34515145132.

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 23154151543 - 2¹ = 23154151541 is a prime.

It is a super-2 number, since 2×23154151543² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23154151499 and 23154151508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23154151541) 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, 503351098 + ... + 503351143.

It is an arithmetic number, because the mean of its divisors is an integer number (6040213452).

Almost surely, 2^23154151543 is an apocalyptic number.

23154151543 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

23154151543 is a deficient number, since it is larger than the sum of its proper divisors (1006702265).

23154151543 is a wasteful number, since it uses less digits than its factorization.

23154151543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006702264.

The product of its digits is 36000, while the sum is 34.

Adding to 23154151543 its reverse (34515145132), we get a palindrome (57669296675).

The spelling of 23154151543 in words is "twenty-three billion, one hundred fifty-four million, one hundred fifty-one thousand, five hundred forty-three".