23891146052449 has 45 divisors (see below), whose sum is σ = 27508312240509. Its totient is φ = 20740154822400.

The previous prime is 23891146052447. The next prime is 23891146052467. The reversal of 23891146052449 is 94425064119832.

The square root of 23891146052449 is 4887857.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 22 ways, for example, as 17450879630625 + 6440266421824 = 4177425^2 + 2537768^2 .

It is not a de Polignac number, because 23891146052449 - 2¹ = 23891146052447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23891146052393 and 23891146052402.

It is not an unprimeable number, because it can be changed into a prime (23891146052447) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 18363678099 + ... + 18363679399.

Almost surely, 2^{23891146052449} is an apocalyptic number.

23891146052449 is the 4887857-th square number.

23891146052449 is the 2443929-th centered octagonal number.

It is an amenable number.

23891146052449 is a deficient number, since it is larger than the sum of its proper divisors (3617166188060).

23891146052449 is an frugal number, since it uses more digits than its factorization.

23891146052449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696 (or 1331 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 58.

The spelling of 23891146052449 in words is "twenty-three trillion, eight hundred ninety-one billion, one hundred forty-six million, fifty-two thousand, four hundred forty-nine".