230778477871 has 4 divisors (see below), whose sum is σ = 230858640000. Its totient is φ = 230698315744.

The previous prime is 230778477857. The next prime is 230778477913. The reversal of 230778477871 is 178774877032.

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 230778477871 - 2³³ = 222188543279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230778477071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40076746 + ... + 40082503.

It is an arithmetic number, because the mean of its divisors is an integer number (57714660000).

Almost surely, 2^230778477871 is an apocalyptic number.

230778477871 is a deficient number, since it is larger than the sum of its proper divisors (80162129).

230778477871 is an equidigital number, since it uses as much as digits as its factorization.

230778477871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80162128.

The product of its (nonzero) digits is 25815552, while the sum is 61.

The spelling of 230778477871 in words is "two hundred thirty billion, seven hundred seventy-eight million, four hundred seventy-seven thousand, eight hundred seventy-one".