78069687434 has 16 divisors (see below), whose sum is σ = 121341749760. Its totient is φ = 37632013680.

The previous prime is 78069687431. The next prime is 78069687439. The reversal of 78069687434 is 43478696087.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is not an unprimeable number, because it can be changed into a prime (78069687431) 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, 2377589 + ... + 2410200.

It is an arithmetic number, because the mean of its divisors is an integer number (7583859360).

Almost surely, 2^78069687434 is an apocalyptic number.

78069687434 is a deficient number, since it is larger than the sum of its proper divisors (43272062326).

78069687434 is a wasteful number, since it uses less digits than its factorization.

78069687434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4788085.

The product of its (nonzero) digits is 48771072, while the sum is 62.

The spelling of 78069687434 in words is "seventy-eight billion, sixty-nine million, six hundred eighty-seven thousand, four hundred thirty-four".