82538288121 has 4 divisors (see below), whose sum is σ = 110051050832. Its totient is φ = 55025525412.

The previous prime is 82538288117. The next prime is 82538288149. The reversal of 82538288121 is 12188283528.

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 not a de Polignac number, because 82538288121 - 2² = 82538288117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82538288101) 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, 13756381351 + ... + 13756381356.

It is an arithmetic number, because the mean of its divisors is an integer number (27512762708).

Almost surely, 2^82538288121 is an apocalyptic number.

It is an amenable number.

82538288121 is a deficient number, since it is larger than the sum of its proper divisors (27512762711).

82538288121 is a wasteful number, since it uses less digits than its factorization.

82538288121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27512762710.

The product of its digits is 491520, while the sum is 48.

The spelling of 82538288121 in words is "eighty-two billion, five hundred thirty-eight million, two hundred eighty-eight thousand, one hundred twenty-one".