78635703234 has 32 divisors (see below), whose sum is σ = 181661092416. Its totient is φ = 22427294720.

The previous prime is 78635703233. The next prime is 78635703253. The reversal of 78635703234 is 43230753687.

It is not an unprimeable number, because it can be changed into a prime (78635703233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35041527 + ... + 35043770.

It is an arithmetic number, because the mean of its divisors is an integer number (5676909138).

Almost surely, 2^78635703234 is an apocalyptic number.

78635703234 is an abundant number, since it is smaller than the sum of its proper divisors (103025389182).

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

78635703234 is a wasteful number, since it uses less digits than its factorization.

78635703234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70085330.

The product of its (nonzero) digits is 2540160, while the sum is 48.

The spelling of 78635703234 in words is "seventy-eight billion, six hundred thirty-five million, seven hundred three thousand, two hundred thirty-four".