82749388075839 has 8 divisors (see below), whose sum is σ = 122591686038320. Its totient is φ = 55166258717208.

The previous prime is 82749388075831. The next prime is 82749388075843. The reversal of 82749388075839 is 93857088394728.

82749388075839 is a `hidden beast` number, since 8 + 27 + 4 + 9 + 3 + 8 + 8 + 0 + 7 + 583 + 9 = 666.

It is not a de Polignac number, because 82749388075839 - 2³ = 82749388075831 is a prime.

It is a super-2 number, since 2×82749388075839² (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 (82749388075831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1532396075452 + ... + 1532396075505.

It is an arithmetic number, because the mean of its divisors is an integer number (15323960754790).

Almost surely, 2^{82749388075839} is an apocalyptic number.

82749388075839 is a deficient number, since it is larger than the sum of its proper divisors (39842297962481).

82749388075839 is a wasteful number, since it uses less digits than its factorization.

82749388075839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3064792150966 (or 3064792150960 counting only the distinct ones).

The product of its (nonzero) digits is 5852528640, while the sum is 81.

The spelling of 82749388075839 in words is "eighty-two trillion, seven hundred forty-nine billion, three hundred eighty-eight million, seventy-five thousand, eight hundred thirty-nine".