877718816375212 has 144 divisors (see below), whose sum is σ = 1828083122933760. Its totient is φ = 361183739904000.

The previous prime is 877718816375189. The next prime is 877718816375239. The reversal of 877718816375212 is 212573618817778.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21428138412 + ... + 21428179372.

It is an arithmetic number, because the mean of its divisors is an integer number (12695021687040).

Almost surely, 2^{877718816375212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 877718816375212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (914041561466880).

877718816375212 is an abundant number, since it is smaller than the sum of its proper divisors (950364306558548).

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

877718816375212 is a wasteful number, since it uses less digits than its factorization.

877718816375212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47244 (or 47211 counting only the distinct ones).

The product of its digits is 442552320, while the sum is 73.

The spelling of 877718816375212 in words is "eight hundred seventy-seven trillion, seven hundred eighteen billion, eight hundred sixteen million, three hundred seventy-five thousand, two hundred twelve".