83573654081 has 2 divisors, whose sum is σ = 83573654082. Its totient is φ = 83573654080.

The previous prime is 83573654077. The next prime is 83573654107. The reversal of 83573654081 is 18045637538.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83183789056 + 389865025 = 288416^2 + 19745^2 .

It is a cyclic number.

It is not a de Polignac number, because 83573654081 - 2² = 83573654077 is a prime.

It is a super-2 number, since 2×83573654081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (83573654051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41786827040 + 41786827041.

It is an arithmetic number, because the mean of its divisors is an integer number (41786827041).

Almost surely, 2^83573654081 is an apocalyptic number.

It is an amenable number.

83573654081 is a deficient number, since it is larger than the sum of its proper divisors (1).

83573654081 is an equidigital number, since it uses as much as digits as its factorization.

83573654081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 83573654081 in words is "eighty-three billion, five hundred seventy-three million, six hundred fifty-four thousand, eighty-one".