78232189831 has 8 divisors (see below), whose sum is σ = 80180707824. Its totient is φ = 76285596480.

The previous prime is 78232189817. The next prime is 78232189853. The reversal of 78232189831 is 13898123287.

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

It is a cyclic number.

It is not a de Polignac number, because 78232189831 - 2²⁵ = 78198635399 is a prime.

It is a super-2 number, since 2×78232189831² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78232189801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398680 + ... + 561613.

It is an arithmetic number, because the mean of its divisors is an integer number (10022588478).

Almost surely, 2^78232189831 is an apocalyptic number.

78232189831 is a deficient number, since it is larger than the sum of its proper divisors (1948517993).

78232189831 is a wasteful number, since it uses less digits than its factorization.

78232189831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962321.

The product of its digits is 1161216, while the sum is 52.

The spelling of 78232189831 in words is "seventy-eight billion, two hundred thirty-two million, one hundred eighty-nine thousand, eight hundred thirty-one".