869977209200 has 120 divisors (see below), whose sum is σ = 2287327686480. Its totient is φ = 315356876800.

The previous prime is 869977209197. The next prime is 869977209217. The reversal of 869977209200 is 2902779968.

It is a self number, because there is not a number n which added to its sum of digits gives 869977209200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1082936 + ... + 1706664.

It is an arithmetic number, because the mean of its divisors is an integer number (19061064054).

Almost surely, 2^869977209200 is an apocalyptic number.

869977209200 is a gapful number since it is divisible by the number (80) 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 869977209200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1143663843240).

869977209200 is an abundant number, since it is smaller than the sum of its proper divisors (1417350477280).

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

869977209200 is a wasteful number, since it uses less digits than its factorization.

869977209200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624075 (or 624064 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 59.

The spelling of 869977209200 in words is "eight hundred sixty-nine billion, nine hundred seventy-seven million, two hundred nine thousand, two hundred".