83747743722 has 80 divisors (see below), whose sum is σ = 199324505160. Its totient is φ = 26190646272.

The previous prime is 83747743679. The next prime is 83747743733. The reversal of 83747743722 is 22734774738.

It can be written as a sum of positive squares in 4 ways, for example, as 72409966281 + 11337777441 = 269091^2 + 106479^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 825054 + ... + 920982.

Almost surely, 2^83747743722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83747743722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99662252580).

83747743722 is an abundant number, since it is smaller than the sum of its proper divisors (115576761438).

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

83747743722 is a wasteful number, since it uses less digits than its factorization.

83747743722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96277 (or 96268 counting only the distinct ones).

The product of its digits is 11063808, while the sum is 54.

The spelling of 83747743722 in words is "eighty-three billion, seven hundred forty-seven million, seven hundred forty-three thousand, seven hundred twenty-two".