78570109842 has 32 divisors (see below), whose sum is σ = 179743352832. Its totient is φ = 22429286544.

The previous prime is 78570109831. The next prime is 78570109867. The reversal of 78570109842 is 24890107587.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 755418 + ... + 853109.

It is an arithmetic number, because the mean of its divisors is an integer number (5616979776).

Almost surely, 2^78570109842 is an apocalyptic number.

78570109842 is an abundant number, since it is smaller than the sum of its proper divisors (101173242990).

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

78570109842 is a wasteful number, since it uses less digits than its factorization.

78570109842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609702.

The product of its (nonzero) digits is 1128960, while the sum is 51.

The spelling of 78570109842 in words is "seventy-eight billion, five hundred seventy million, one hundred nine thousand, eight hundred forty-two".