23530149499 has 4 divisors (see below), whose sum is σ = 24768578440. Its totient is φ = 22291720560.

The previous prime is 23530149481. The next prime is 23530149521. The reversal of 23530149499 is 99494103532.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23530149499 - 2²³ = 23521760891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23530149469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619214442 + ... + 619214479.

It is an arithmetic number, because the mean of its divisors is an integer number (6192144610).

Almost surely, 2^23530149499 is an apocalyptic number.

23530149499 is a deficient number, since it is larger than the sum of its proper divisors (1238428941).

23530149499 is a wasteful number, since it uses less digits than its factorization.

23530149499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238428940.

The product of its (nonzero) digits is 1049760, while the sum is 49.

The spelling of 23530149499 in words is "twenty-three billion, five hundred thirty million, one hundred forty-nine thousand, four hundred ninety-nine".