83557713018 has 64 divisors (see below), whose sum is σ = 182048186880. Its totient is φ = 25414835712.

The previous prime is 83557712999. The next prime is 83557713023. The reversal of 83557713018 is 81031775538.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2537596 + ... + 2570312.

It is an arithmetic number, because the mean of its divisors is an integer number (2844502920).

Almost surely, 2^83557713018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83557713018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91024093440).

83557713018 is an abundant number, since it is smaller than the sum of its proper divisors (98490473862).

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

83557713018 is a wasteful number, since it uses less digits than its factorization.

83557713018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33111.

The product of its (nonzero) digits is 705600, while the sum is 48.

The spelling of 83557713018 in words is "eighty-three billion, five hundred fifty-seven million, seven hundred thirteen thousand, eighteen".