82140636449399 has 24 divisors (see below), whose sum is σ = 90319733792400. Its totient is φ = 74646086232960.

The previous prime is 82140636449393. The next prime is 82140636449407. The reversal of 82140636449399 is 99394463604128.

It is not a de Polignac number, because 82140636449399 - 2⁴ = 82140636449383 is a prime.

It is a super-2 number, since 2×82140636449399² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82140636449393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5805395177 + ... + 5805409325.

It is an arithmetic number, because the mean of its divisors is an integer number (3763322241350).

Almost surely, 2^{82140636449399} is an apocalyptic number.

82140636449399 is a deficient number, since it is larger than the sum of its proper divisors (8179097343001).

82140636449399 is a wasteful number, since it uses less digits than its factorization.

82140636449399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28271 (or 28260 counting only the distinct ones).

The product of its (nonzero) digits is 241864704, while the sum is 68.

The spelling of 82140636449399 in words is "eighty-two trillion, one hundred forty billion, six hundred thirty-six million, four hundred forty-nine thousand, three hundred ninety-nine".