78152312336066 has 16 divisors (see below), whose sum is σ = 125824593112344. Its totient is φ = 36273756570624.

The previous prime is 78152312336053. The next prime is 78152312336069. The reversal of 78152312336066 is 66063321325187.

78152312336066 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 77210859354841 + 941452981225 = 8786971^2 + 970285^2 .

It is a super-2 number, since 2×78152312336066² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78152312335999 and 78152312336017.

It is not an unprimeable number, because it can be changed into a prime (78152312336069) 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, 15743815475 + ... + 15743820438.

Almost surely, 2^{78152312336066} is an apocalyptic number.

78152312336066 is a deficient number, since it is larger than the sum of its proper divisors (47672280776278).

78152312336066 is a wasteful number, since it uses less digits than its factorization.

78152312336066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31487636005.

The product of its (nonzero) digits is 6531840, while the sum is 53.

The spelling of 78152312336066 in words is "seventy-eight trillion, one hundred fifty-two billion, three hundred twelve million, three hundred thirty-six thousand, sixty-six".