83303073661 has 4 divisors (see below), whose sum is σ = 83784594492. Its totient is φ = 82821552832.

The previous prime is 83303073647. The next prime is 83303073683. The reversal of 83303073661 is 16637030338.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64607980761 + 18695092900 = 254181^2 + 136730^2 .

It is a cyclic number.

It is not a de Polignac number, because 83303073661 - 2¹⁷ = 83302942589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83303073611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240760156 + ... + 240760501.

It is an arithmetic number, because the mean of its divisors is an integer number (20946148623).

Almost surely, 2^83303073661 is an apocalyptic number.

It is an amenable number.

83303073661 is a deficient number, since it is larger than the sum of its proper divisors (481520831).

83303073661 is a wasteful number, since it uses less digits than its factorization.

83303073661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481520830.

The product of its (nonzero) digits is 163296, while the sum is 40.

The spelling of 83303073661 in words is "eighty-three billion, three hundred three million, seventy-three thousand, six hundred sixty-one".