78010020212 has 12 divisors (see below), whose sum is σ = 136534047300. Its totient is φ = 39000292416.

The previous prime is 78010020119. The next prime is 78010020281. The reversal of 78010020212 is 21202001087.

It can be written as a sum of positive squares in 2 ways, for example, as 75380997136 + 2629023076 = 274556^2 + 51274^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1142087 + ... + 1208462.

It is an arithmetic number, because the mean of its divisors is an integer number (11377837275).

Almost surely, 2^78010020212 is an apocalyptic number.

It is an amenable number.

78010020212 is a deficient number, since it is larger than the sum of its proper divisors (58524027088).

78010020212 is a wasteful number, since it uses less digits than its factorization.

78010020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358850 (or 2358848 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 78010020212 its reverse (21202001087), we get a palindrome (99212021299).

The spelling of 78010020212 in words is "seventy-eight billion, ten million, twenty thousand, two hundred twelve".