78900000201212 has 12 divisors (see below), whose sum is σ = 138075923381760. Its totient is φ = 39449736377856.

The previous prime is 78900000201193. The next prime is 78900000201233. The reversal of 78900000201212 is 21210200000987.

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 3 ways as a sum of consecutive naturals, for example, 65256773 + ... + 66454844.

It is an arithmetic number, because the mean of its divisors is an integer number (11506326948480).

Almost surely, 2^{78900000201212} is an apocalyptic number.

It is an amenable number.

78900000201212 is a deficient number, since it is larger than the sum of its proper divisors (59175923180548).

78900000201212 is a wasteful number, since it uses less digits than its factorization.

78900000201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131861380 (or 131861378 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The spelling of 78900000201212 in words is "seventy-eight trillion, nine hundred billion, two hundred one thousand, two hundred twelve".