78789332766 has 32 divisors (see below), whose sum is σ = 160677144576. Its totient is φ = 25749468000.

The previous prime is 78789332759. The next prime is 78789332771. The reversal of 78789332766 is 66723398787.

It is a super-2 number, since 2×78789332766² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78789332697 and 78789332706.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 232270 + ... + 459921.

It is an arithmetic number, because the mean of its divisors is an integer number (5021160768).

Almost surely, 2^78789332766 is an apocalyptic number.

78789332766 is an abundant number, since it is smaller than the sum of its proper divisors (81887811810).

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

78789332766 is a wasteful number, since it uses less digits than its factorization.

78789332766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692568.

The product of its digits is 128024064, while the sum is 66.

The spelling of 78789332766 in words is "seventy-eight billion, seven hundred eighty-nine million, three hundred thirty-two thousand, seven hundred sixty-six".