78785500336151 has 64 divisors (see below), whose sum is σ = 96198630048000. Its totient is φ = 64427407769088.

The previous prime is 78785500336139. The next prime is 78785500336171. The reversal of 78785500336151 is 15163300558787.

It is a de Polignac number, because none of the positive numbers 2^k-78785500336151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78785500336111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1165621865 + ... + 1165689453.

It is an arithmetic number, because the mean of its divisors is an integer number (1503103594500).

Almost surely, 2^{78785500336151} is an apocalyptic number.

78785500336151 is a deficient number, since it is larger than the sum of its proper divisors (17413129711849).

78785500336151 is a wasteful number, since it uses less digits than its factorization.

78785500336151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69433 (or 69419 counting only the distinct ones).

The product of its (nonzero) digits is 21168000, while the sum is 59.

The spelling of 78785500336151 in words is "seventy-eight trillion, seven hundred eighty-five billion, five hundred million, three hundred thirty-six thousand, one hundred fifty-one".