39982521579 has 128 divisors (see below), whose sum is σ = 75866112000. Its totient is φ = 18037624320.

The previous prime is 39982521559. The next prime is 39982521581. The reversal of 39982521579 is 97512528993.

It is not a de Polignac number, because 39982521579 - 2¹⁹ = 39981997291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39982521559) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8499142 + ... + 8503844.

It is an arithmetic number, because the mean of its divisors is an integer number (592704000).

Almost surely, 2^39982521579 is an apocalyptic number.

39982521579 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

39982521579 is a deficient number, since it is larger than the sum of its proper divisors (35883590421).

39982521579 is a wasteful number, since it uses less digits than its factorization.

39982521579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4905.

The product of its digits is 12247200, while the sum is 60.

The spelling of 39982521579 in words is "thirty-nine billion, nine hundred eighty-two million, five hundred twenty-one thousand, five hundred seventy-nine".