82139590227 has 32 divisors (see below), whose sum is σ = 115013882880. Its totient is φ = 52071367040.

The previous prime is 82139590223. The next prime is 82139590237. The reversal of 82139590227 is 72209593128.

It is a cyclic number.

It is not a de Polignac number, because 82139590227 - 2² = 82139590223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82139590223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6250738 + ... + 6263864.

It is an arithmetic number, because the mean of its divisors is an integer number (3594183840).

Almost surely, 2^82139590227 is an apocalyptic number.

82139590227 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

82139590227 is a deficient number, since it is larger than the sum of its proper divisors (32874292653).

82139590227 is a wasteful number, since it uses less digits than its factorization.

82139590227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14243.

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 82139590227 in words is "eighty-two billion, one hundred thirty-nine million, five hundred ninety thousand, two hundred twenty-seven".