23154176259493 has 4 divisors (see below), whose sum is σ = 23952596130540. Its totient is φ = 22355756388448.

The previous prime is 23154176259481. The next prime is 23154176259629. The reversal of 23154176259493 is 39495267145132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3869018188324 + 19285158071169 = 1966982^2 + 4391487^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23154176259493 is a prime.

It is a super-2 number, since 2×23154176259493² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23154176259793) 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, 399209935480 + ... + 399209935537.

It is an arithmetic number, because the mean of its divisors is an integer number (5988149032635).

Almost surely, 2^{23154176259493} is an apocalyptic number.

It is an amenable number.

23154176259493 is a deficient number, since it is larger than the sum of its proper divisors (798419871047).

23154176259493 is an equidigital number, since it uses as much as digits as its factorization.

23154176259493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798419871046.

The product of its digits is 48988800, while the sum is 61.

The spelling of 23154176259493 in words is "twenty-three trillion, one hundred fifty-four billion, one hundred seventy-six million, two hundred fifty-nine thousand, four hundred ninety-three".