23897523451 has 2 divisors, whose sum is σ = 23897523452. Its totient is φ = 23897523450.

The previous prime is 23897523439. The next prime is 23897523491. The reversal of 23897523451 is 15432579832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23897523451 - 2⁷ = 23897523323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23897523395 and 23897523404.

It is not a weakly prime, because it can be changed into another prime (23897523401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11948761725 + 11948761726.

It is an arithmetic number, because the mean of its divisors is an integer number (11948761726).

Almost surely, 2^23897523451 is an apocalyptic number.

23897523451 is a deficient number, since it is larger than the sum of its proper divisors (1).

23897523451 is an equidigital number, since it uses as much as digits as its factorization.

23897523451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 49.

The spelling of 23897523451 in words is "twenty-three billion, eight hundred ninety-seven million, five hundred twenty-three thousand, four hundred fifty-one".