83502315121 has 4 divisors (see below), whose sum is σ = 84002329152. Its totient is φ = 83002301092.

The previous prime is 83502315109. The next prime is 83502315151. The reversal of 83502315121 is 12151320538.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83502315121 - 2¹³ = 83502306929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83502315101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250006765 + ... + 250007098.

It is an arithmetic number, because the mean of its divisors is an integer number (21000582288).

Almost surely, 2^83502315121 is an apocalyptic number.

It is an amenable number.

83502315121 is a deficient number, since it is larger than the sum of its proper divisors (500014031).

83502315121 is a wasteful number, since it uses less digits than its factorization.

83502315121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500014030.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 83502315121 its reverse (12151320538), we get a palindrome (95653635659).

The spelling of 83502315121 in words is "eighty-three billion, five hundred two million, three hundred fifteen thousand, one hundred twenty-one".