230991977586 has 8 divisors (see below), whose sum is σ = 461983955184. Its totient is φ = 76997325860.

The previous prime is 230991977581. The next prime is 230991977597. The reversal of 230991977586 is 685779199032.

230991977586 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

230991977586 is an admirable number.

It is a super-2 number, since 2×230991977586² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (230991977581) 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, 19249331460 + ... + 19249331471.

It is an arithmetic number, because the mean of its divisors is an integer number (57747994398).

Almost surely, 2^230991977586 is an apocalyptic number.

230991977586 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230991977586 is a wasteful number, since it uses less digits than its factorization.

230991977586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38498662936.

The product of its (nonzero) digits is 51438240, while the sum is 66.

The spelling of 230991977586 in words is "two hundred thirty billion, nine hundred ninety-one million, nine hundred seventy-seven thousand, five hundred eighty-six".