78472338784670 has 48 divisors (see below), whose sum is σ = 157945053515760. Its totient is φ = 27987657652224.

The previous prime is 78472338784663. The next prime is 78472338784703. The reversal of 78472338784670 is 7648783327487.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 714499259 + ... + 714609078.

It is an arithmetic number, because the mean of its divisors is an integer number (3290521948245).

Almost surely, 2^{78472338784670} is an apocalyptic number.

78472338784670 is an abundant number, since it is smaller than the sum of its proper divisors (79472714731090).

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

78472338784670 is a wasteful number, since it uses less digits than its factorization.

78472338784670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429108397 (or 1429108380 counting only the distinct ones).

The product of its (nonzero) digits is 2124251136, while the sum is 74.

The spelling of 78472338784670 in words is "seventy-eight trillion, four hundred seventy-two billion, three hundred thirty-eight million, seven hundred eighty-four thousand, six hundred seventy".