83468781778158 has 64 divisors (see below), whose sum is σ = 211985232529920. Its totient is φ = 23848108070976.

The previous prime is 83468781778141. The next prime is 83468781778177. The reversal of 83468781778158 is 85187718786438.

83468781778158 is a `hidden beast` number, since 8 + 3 + 468 + 7 + 8 + 1 + 77 + 81 + 5 + 8 = 666.

83468781778158 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105674466 + ... + 106461402.

It is an arithmetic number, because the mean of its divisors is an integer number (3312269258280).

Almost surely, 2^{83468781778158} is an apocalyptic number.

83468781778158 is an abundant number, since it is smaller than the sum of its proper divisors (128516450751762).

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

83468781778158 is a wasteful number, since it uses less digits than its factorization.

83468781778158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067558 (or 1067552 counting only the distinct ones).

The product of its digits is 4046192640, while the sum is 81.

The spelling of 83468781778158 in words is "eighty-three trillion, four hundred sixty-eight billion, seven hundred eighty-one million, seven hundred seventy-eight thousand, one hundred fifty-eight".