82773981750 has 128 divisors (see below), whose sum is σ = 219616914816. Its totient is φ = 20692992000.

The previous prime is 82773981749. The next prime is 82773981863. The reversal of 82773981750 is 5718937728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3264120 + ... + 3289380.

It is an arithmetic number, because the mean of its divisors is an integer number (1715757147).

Almost surely, 2^82773981750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82773981750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109808457408).

82773981750 is an abundant number, since it is smaller than the sum of its proper divisors (136842933066).

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

82773981750 is a wasteful number, since it uses less digits than its factorization.

82773981750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25555 (or 25545 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 57.

The spelling of 82773981750 in words is "eighty-two billion, seven hundred seventy-three million, nine hundred eighty-one thousand, seven hundred fifty".