83572689437 has 2 divisors, whose sum is σ = 83572689438. Its totient is φ = 83572689436.

The previous prime is 83572689379. The next prime is 83572689461. The reversal of 83572689437 is 73498627538.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53511718276 + 30060971161 = 231326^2 + 173381^2 .

It is a cyclic number.

It is not a de Polignac number, because 83572689437 - 2¹² = 83572685341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83572689437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83572689037) 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 as a sum of consecutive naturals, namely, 41786344718 + 41786344719.

It is an arithmetic number, because the mean of its divisors is an integer number (41786344719).

Almost surely, 2^83572689437 is an apocalyptic number.

It is an amenable number.

83572689437 is a deficient number, since it is larger than the sum of its proper divisors (1).

83572689437 is an equidigital number, since it uses as much as digits as its factorization.

83572689437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60963840, while the sum is 62.

The spelling of 83572689437 in words is "eighty-three billion, five hundred seventy-two million, six hundred eighty-nine thousand, four hundred thirty-seven".