78700172830 has 16 divisors (see below), whose sum is σ = 142451712720. Its totient is φ = 31304202112.

The previous prime is 78700172737. The next prime is 78700172839. The reversal of 78700172830 is 3827100787.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78700172839) 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, 21981499 + ... + 21985078.

It is an arithmetic number, because the mean of its divisors is an integer number (8903232045).

Almost surely, 2^78700172830 is an apocalyptic number.

78700172830 is a deficient number, since it is larger than the sum of its proper divisors (63751539890).

78700172830 is a wasteful number, since it uses less digits than its factorization.

78700172830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43966763.

The product of its (nonzero) digits is 131712, while the sum is 43.

The spelling of 78700172830 in words is "seventy-eight billion, seven hundred million, one hundred seventy-two thousand, eight hundred thirty".