78747812210 has 16 divisors (see below), whose sum is σ = 145042482816. Its totient is φ = 30766586928.

The previous prime is 78747812203. The next prime is 78747812263. The reversal of 78747812210 is 1221874787.

It is a happy number.

It is a super-2 number, since 2×78747812210² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91566794 + ... + 91567653.

It is an arithmetic number, because the mean of its divisors is an integer number (9065155176).

Almost surely, 2^78747812210 is an apocalyptic number.

78747812210 is a deficient number, since it is larger than the sum of its proper divisors (66294670606).

78747812210 is a wasteful number, since it uses less digits than its factorization.

78747812210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183134497.

The product of its (nonzero) digits is 351232, while the sum is 47.

The spelling of 78747812210 in words is "seventy-eight billion, seven hundred forty-seven million, eight hundred twelve thousand, two hundred ten".