39780621432 has 24 divisors (see below), whose sum is σ = 107739183240. Its totient is φ = 13260207120.

The previous prime is 39780621253. The next prime is 39780621457. The reversal of 39780621432 is 23412608793.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 276254244 + ... + 276254387.

It is an arithmetic number, because the mean of its divisors is an integer number (4489132635).

Almost surely, 2^39780621432 is an apocalyptic number.

It is an amenable number.

39780621432 is an abundant number, since it is smaller than the sum of its proper divisors (67958561808).

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

39780621432 is a wasteful number, since it uses less digits than its factorization.

39780621432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552508643 (or 552508636 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 39780621432 in words is "thirty-nine billion, seven hundred eighty million, six hundred twenty-one thousand, four hundred thirty-two".