230761515521 has 4 divisors (see below), whose sum is σ = 230864398512. Its totient is φ = 230658632532.

The previous prime is 230761515503. The next prime is 230761515547. The reversal of 230761515521 is 125515167032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 230761515521 - 2¹⁸ = 230761253377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230761511521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51438131 + ... + 51442616.

It is an arithmetic number, because the mean of its divisors is an integer number (57716099628).

Almost surely, 2^230761515521 is an apocalyptic number.

It is an amenable number.

230761515521 is a deficient number, since it is larger than the sum of its proper divisors (102882991).

230761515521 is a wasteful number, since it uses less digits than its factorization.

230761515521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102882990.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 230761515521 in words is "two hundred thirty billion, seven hundred sixty-one million, five hundred fifteen thousand, five hundred twenty-one".