78701494842 has 24 divisors (see below), whose sum is σ = 171764581716. Its totient is φ = 26042342976.

The previous prime is 78701494811. The next prime is 78701494843. The reversal of 78701494842 is 24849410787.

78701494842 is a `hidden beast` number, since 7 + 8 + 70 + 1 + 494 + 84 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 75042575721 + 3658919121 = 273939^2 + 60489^2 .

It is not an unprimeable number, because it can be changed into a prime (78701494843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15954853 + ... + 15959784.

Almost surely, 2^78701494842 is an apocalyptic number.

78701494842 is an abundant number, since it is smaller than the sum of its proper divisors (93063086874).

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

78701494842 is a wasteful number, since it uses less digits than its factorization.

78701494842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31914782 (or 31914779 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 78701494842 in words is "seventy-eight billion, seven hundred one million, four hundred ninety-four thousand, eight hundred forty-two".