39780428364 has 72 divisors (see below), whose sum is σ = 106085070000. Its totient is φ = 12534165504.

The previous prime is 39780428339. The next prime is 39780428377. The reversal of 39780428364 is 46382408793.

39780428364 is a `hidden beast` number, since 397 + 80 + 42 + 83 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 39780428364.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 242352 + ... + 371880.

It is an arithmetic number, because the mean of its divisors is an integer number (1473403750).

Almost surely, 2^39780428364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39780428364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53042535000).

39780428364 is an abundant number, since it is smaller than the sum of its proper divisors (66304641636).

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

39780428364 is a wasteful number, since it uses less digits than its factorization.

39780428364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130007 (or 130002 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 39780428364 in words is "thirty-nine billion, seven hundred eighty million, four hundred twenty-eight thousand, three hundred sixty-four".