83549386749568 has 128 divisors (see below), whose sum is σ = 177900494428800. Its totient is φ = 39013687480320.

The previous prime is 83549386749557. The next prime is 83549386749637. The reversal of 83549386749568 is 86594768394538.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13899478 + ... + 18981418.

It is an arithmetic number, because the mean of its divisors is an integer number (1389847612725).

Almost surely, 2^{83549386749568} 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 83549386749568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88950247214400).

83549386749568 is an abundant number, since it is smaller than the sum of its proper divisors (94351107679232).

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

83549386749568 is a wasteful number, since it uses less digits than its factorization.

83549386749568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5082130 (or 5082118 counting only the distinct ones).

The product of its digits is 37623398400, while the sum is 85.

The spelling of 83549386749568 in words is "eighty-three trillion, five hundred forty-nine billion, three hundred eighty-six million, seven hundred forty-nine thousand, five hundred sixty-eight".