78740877842 has 16 divisors (see below), whose sum is σ = 129327710400. Its totient is φ = 35658252240.

The previous prime is 78740877829. The next prime is 78740877847. The reversal of 78740877842 is 24877804787.

It is not an unprimeable number, because it can be changed into a prime (78740877847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6646742 + ... + 6658577.

It is an arithmetic number, because the mean of its divisors is an integer number (8082981900).

Almost surely, 2^78740877842 is an apocalyptic number.

78740877842 is a deficient number, since it is larger than the sum of its proper divisors (50586832558).

78740877842 is a wasteful number, since it uses less digits than its factorization.

78740877842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13305601.

The product of its (nonzero) digits is 39337984, while the sum is 62.

The spelling of 78740877842 in words is "seventy-eight billion, seven hundred forty million, eight hundred seventy-seven thousand, eight hundred forty-two".