83502315109 has 2 divisors, whose sum is σ = 83502315110. Its totient is φ = 83502315108.

The previous prime is 83502315107. The next prime is 83502315151. The reversal of 83502315109 is 90151320538.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44329197025 + 39173118084 = 210545^2 + 197922^2 .

It is a cyclic number.

It is not a de Polignac number, because 83502315109 - 2¹ = 83502315107 is a prime.

Together with 83502315107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83502315101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41751157554 + 41751157555.

It is an arithmetic number, because the mean of its divisors is an integer number (41751157555).

Almost surely, 2^83502315109 is an apocalyptic number.

It is an amenable number.

83502315109 is a deficient number, since it is larger than the sum of its proper divisors (1).

83502315109 is an equidigital number, since it uses as much as digits as its factorization.

83502315109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 83502315109 in words is "eighty-three billion, five hundred two million, three hundred fifteen thousand, one hundred nine".