39928867229568 has 64 divisors (see below), whose sum is σ = 111643214313600. Its totient is φ = 12609115964928.

The previous prime is 39928867229411. The next prime is 39928867229711. The reversal of 39928867229568 is 86592276882993.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×39928867229568² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2736345996 + ... + 2736360587.

It is an arithmetic number, because the mean of its divisors is an integer number (1744425223650).

Almost surely, 2^{39928867229568} is an apocalyptic number.

39928867229568 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

39928867229568 is an abundant number, since it is smaller than the sum of its proper divisors (71714347084032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39928867229568 is a wasteful number, since it uses less digits than its factorization.

39928867229568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5472706619 (or 5472706607 counting only the distinct ones).

The product of its digits is 11287019520, while the sum is 84.

The spelling of 39928867229568 in words is "thirty-nine trillion, nine hundred twenty-eight billion, eight hundred sixty-seven million, two hundred twenty-nine thousand, five hundred sixty-eight".