23154252531457 has 8 divisors (see below), whose sum is σ = 23166217533800. Its totient is φ = 23142289161600.

The previous prime is 23154252531451. The next prime is 23154252531649. The reversal of 23154252531457 is 75413525245132.

It can be written as a sum of positive squares in 4 ways, for example, as 6912739965681 + 16241512565776 = 2629209^2 + 4030076^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23154252531457 - 2⁴³ = 14358159509249 is a prime.

It is a super-2 number, since 2×23154252531457² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23154252531457.

It is not an unprimeable number, because it can be changed into a prime (23154252531451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28493419 + ... + 29294767.

It is an arithmetic number, because the mean of its divisors is an integer number (2895777191725).

Almost surely, 2^{23154252531457} is an apocalyptic number.

It is an amenable number.

23154252531457 is a deficient number, since it is larger than the sum of its proper divisors (11965002343).

23154252531457 is a wasteful number, since it uses less digits than its factorization.

23154252531457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816243.

The product of its digits is 5040000, while the sum is 49.

Adding to 23154252531457 its reverse (75413525245132), we get a palindrome (98567777776589).

The spelling of 23154252531457 in words is "twenty-three trillion, one hundred fifty-four billion, two hundred fifty-two million, five hundred thirty-one thousand, four hundred fifty-seven".