23503440144157 has 2 divisors, whose sum is σ = 23503440144158. Its totient is φ = 23503440144156.

The previous prime is 23503440144143. The next prime is 23503440144181. The reversal of 23503440144157 is 75144104430532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18192494050756 + 5310946093401 = 4265266^2 + 2304549^2 .

It is a cyclic number.

It is not a de Polignac number, because 23503440144157 - 2²³ = 23503431755549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23503440144257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11751720072078 + 11751720072079.

It is an arithmetic number, because the mean of its divisors is an integer number (11751720072079).

Almost surely, 2^{23503440144157} is an apocalyptic number.

It is an amenable number.

23503440144157 is a deficient number, since it is larger than the sum of its proper divisors (1).

23503440144157 is an equidigital number, since it uses as much as digits as its factorization.

23503440144157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 806400, while the sum is 43.

Adding to 23503440144157 its reverse (75144104430532), we get a palindrome (98647544574689).

The spelling of 23503440144157 in words is "twenty-three trillion, five hundred three billion, four hundred forty million, one hundred forty-four thousand, one hundred fifty-seven".