82509061236 has 96 divisors (see below), whose sum is σ = 226097071872. Its totient is φ = 22924062720.

The previous prime is 82509061223. The next prime is 82509061277. The reversal of 82509061236 is 63216090528.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6461370 + ... + 6474126.

It is an arithmetic number, because the mean of its divisors is an integer number (2355177832).

Almost surely, 2^82509061236 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 82509061236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113048535936).

82509061236 is an abundant number, since it is smaller than the sum of its proper divisors (143588010636).

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

82509061236 is a wasteful number, since it uses less digits than its factorization.

82509061236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14889 (or 14887 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 82509061236 in words is "eighty-two billion, five hundred nine million, sixty-one thousand, two hundred thirty-six".