83820118061 has 2 divisors, whose sum is σ = 83820118062. Its totient is φ = 83820118060.

The previous prime is 83820117991. The next prime is 83820118079. The reversal of 83820118061 is 16081102838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83517532036 + 302586025 = 288994^2 + 17395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83820118061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83820118091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41910059030 + 41910059031.

It is an arithmetic number, because the mean of its divisors is an integer number (41910059031).

Almost surely, 2^83820118061 is an apocalyptic number.

It is an amenable number.

83820118061 is a deficient number, since it is larger than the sum of its proper divisors (1).

83820118061 is an equidigital number, since it uses as much as digits as its factorization.

83820118061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 38.

The spelling of 83820118061 in words is "eighty-three billion, eight hundred twenty million, one hundred eighteen thousand, sixty-one".