82521744741 has 36 divisors (see below), whose sum is σ = 122313716928. Its totient is φ = 53588858832.

The previous prime is 82521744671. The next prime is 82521744757. The reversal of 82521744741 is 14744712528.

82521744741 is a `hidden beast` number, since 8 + 2 + 5 + 2 + 174 + 474 + 1 = 666.

It is not a de Polignac number, because 82521744741 - 2¹⁵ = 82521711973 is a prime.

It is a super-2 number, since 2×82521744741² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82521744761) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21033406 + ... + 21037328.

It is an arithmetic number, because the mean of its divisors is an integer number (3397603248).

Almost surely, 2^82521744741 is an apocalyptic number.

It is an amenable number.

82521744741 is a deficient number, since it is larger than the sum of its proper divisors (39791972187).

82521744741 is a wasteful number, since it uses less digits than its factorization.

82521744741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422 (or 4196 counting only the distinct ones).

The product of its digits is 501760, while the sum is 45.

The spelling of 82521744741 in words is "eighty-two billion, five hundred twenty-one million, seven hundred forty-four thousand, seven hundred forty-one".