83281251806 has 4 divisors (see below), whose sum is σ = 124921877712. Its totient is φ = 41640625902.

The previous prime is 83281251797. The next prime is 83281251821. The reversal of 83281251806 is 60815218238.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20820312950 + ... + 20820312953.

It is an arithmetic number, because the mean of its divisors is an integer number (31230469428).

Almost surely, 2^83281251806 is an apocalyptic number.

83281251806 is a deficient number, since it is larger than the sum of its proper divisors (41640625906).

83281251806 is a wasteful number, since it uses less digits than its factorization.

83281251806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41640625905.

The product of its (nonzero) digits is 184320, while the sum is 44.

The spelling of 83281251806 in words is "eighty-three billion, two hundred eighty-one million, two hundred fifty-one thousand, eight hundred six".