78850168057545 has 24 divisors (see below), whose sum is σ = 131883986208576. Its totient is φ = 40225013265888.

The previous prime is 78850168057469. The next prime is 78850168057547. The reversal of 78850168057545 is 54575086105887.

It is not a de Polignac number, because 78850168057545 - 2⁸ = 78850168057289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a self number, because there is not a number n which added to its sum of digits gives 78850168057545.

It is not an unprimeable number, because it can be changed into a prime (78850168057547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4968496669 + ... + 4968512538.

It is an arithmetic number, because the mean of its divisors is an integer number (5495166092024).

Almost surely, 2^{78850168057545} is an apocalyptic number.

It is an amenable number.

78850168057545 is a deficient number, since it is larger than the sum of its proper divisors (53033818151031).

78850168057545 is a wasteful number, since it uses less digits than its factorization.

78850168057545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9937009261 (or 9937009238 counting only the distinct ones).

The product of its (nonzero) digits is 376320000, while the sum is 69.

The spelling of 78850168057545 in words is "seventy-eight trillion, eight hundred fifty billion, one hundred sixty-eight million, fifty-seven thousand, five hundred forty-five".