39872666424 has 16 divisors (see below), whose sum is σ = 99681666120. Its totient is φ = 13290888800.

The previous prime is 39872666423. The next prime is 39872666437. The reversal of 39872666424 is 42466627893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39872666423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830680527 + ... + 830680574.

Almost surely, 2^39872666424 is an apocalyptic number.

It is an amenable number.

39872666424 is an abundant number, since it is smaller than the sum of its proper divisors (59808999696).

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

39872666424 is a wasteful number, since it uses less digits than its factorization.

39872666424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661361110 (or 1661361106 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 57.

The spelling of 39872666424 in words is "thirty-nine billion, eight hundred seventy-two million, six hundred sixty-six thousand, four hundred twenty-four".