230728979761 has 24 divisors (see below), whose sum is σ = 274728727680. Its totient is φ = 193106646432.

The previous prime is 230728979749. The next prime is 230728979771. The reversal of 230728979761 is 167979827032.

It is not a de Polignac number, because 230728979761 - 2⁵ = 230728979729 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 230728979761.

It is not an unprimeable number, because it can be changed into a prime (230728979771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7293400 + ... + 7324966.

It is an arithmetic number, because the mean of its divisors is an integer number (11447030320).

Almost surely, 2^230728979761 is an apocalyptic number.

It is an amenable number.

230728979761 is a deficient number, since it is larger than the sum of its proper divisors (43999747919).

230728979761 is a wasteful number, since it uses less digits than its factorization.

230728979761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35093 (or 35086 counting only the distinct ones).

The product of its (nonzero) digits is 16003008, while the sum is 61.

The spelling of 230728979761 in words is "two hundred thirty billion, seven hundred twenty-eight million, nine hundred seventy-nine thousand, seven hundred sixty-one".