202089777912 has 96 divisors (see below), whose sum is σ = 597785413680. Its totient is φ = 61167329280.

The previous prime is 202089777889. The next prime is 202089777917. The reversal of 202089777912 is 219777980202.

It is a happy number.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202089777917) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 526008 + ... + 825144.

Almost surely, 2^202089777912 is an apocalyptic number.

202089777912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202089777912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298892706840).

202089777912 is an abundant number, since it is smaller than the sum of its proper divisors (395695635768).

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

202089777912 is a wasteful number, since it uses less digits than its factorization.

202089777912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300013 (or 300006 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 54.

The spelling of 202089777912 in words is "two hundred two billion, eighty-nine million, seven hundred seventy-seven thousand, nine hundred twelve".