23471471537 has 2 divisors, whose sum is σ = 23471471538. Its totient is φ = 23471471536.

The previous prime is 23471471417. The next prime is 23471471563. The reversal of 23471471537 is 73517417432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21984289441 + 1487182096 = 148271^2 + 38564^2 .

It is a cyclic number.

It is not a de Polignac number, because 23471471537 - 2⁸ = 23471471281 is a prime.

It is a super-2 number, since 2×23471471537² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23471471587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11735735768 + 11735735769.

It is an arithmetic number, because the mean of its divisors is an integer number (11735735769).

Almost surely, 2^23471471537 is an apocalyptic number.

It is an amenable number.

23471471537 is a deficient number, since it is larger than the sum of its proper divisors (1).

23471471537 is an equidigital number, since it uses as much as digits as its factorization.

23471471537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493920, while the sum is 44.

Adding to 23471471537 its reverse (73517417432), we get a palindrome (96988888969).

The spelling of 23471471537 in words is "twenty-three billion, four hundred seventy-one million, four hundred seventy-one thousand, five hundred thirty-seven".