23590809649 has 9 divisors (see below), whose sum is σ = 25932251289. Its totient is φ = 21444654660.

The previous prime is 23590809647. The next prime is 23590809719. The reversal of 23590809649 is 94690809532.

It is a happy number.

The square root of 23590809649 is 153593.

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

It is not a de Polignac number, because 23590809649 - 2¹ = 23590809647 is a prime.

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 23590809649.

It is not an unprimeable number, because it can be changed into a prime (23590809647) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1682542 + ... + 1696504.

Almost surely, 2^23590809649 is an apocalyptic number.

23590809649 is the 153593-rd square number.

23590809649 is the 76797-th centered octagonal number.

It is an amenable number.

23590809649 is a deficient number, since it is larger than the sum of its proper divisors (2341441640).

23590809649 is an frugal number, since it uses more digits than its factorization.

23590809649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27948 (or 13974 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 55.

The spelling of 23590809649 in words is "twenty-three billion, five hundred ninety million, eight hundred nine thousand, six hundred forty-nine".