78205825764831 has 8 divisors (see below), whose sum is σ = 104280323305984. Its totient is φ = 52134272700120.

The previous prime is 78205825764779. The next prime is 78205825764839. The reversal of 78205825764831 is 13846752850287.

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

It is not a de Polignac number, because 78205825764831 - 2¹⁴ = 78205825748447 is a prime.

It is a super-2 number, since 2×78205825764831² (a number of 29 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 (78205825764839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 736057135 + ... + 736163376.

It is an arithmetic number, because the mean of its divisors is an integer number (13035040413248).

Almost surely, 2^{78205825764831} is an apocalyptic number.

78205825764831 is a deficient number, since it is larger than the sum of its proper divisors (26074497541153).

78205825764831 is a wasteful number, since it uses less digits than its factorization.

78205825764831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472238221.

The product of its (nonzero) digits is 180633600, while the sum is 66.

The spelling of 78205825764831 in words is "seventy-eight trillion, two hundred five billion, eight hundred twenty-five million, seven hundred sixty-four thousand, eight hundred thirty-one".