39780136368 has 160 divisors (see below), whose sum is σ = 130571166720. Its totient is φ = 11359180800.

The previous prime is 39780136321. The next prime is 39780136397. The reversal of 39780136368 is 86363108793.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8032293 + ... + 8037243.

It is an arithmetic number, because the mean of its divisors is an integer number (816069792).

Almost surely, 2^39780136368 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 39780136368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65285583360).

39780136368 is an abundant number, since it is smaller than the sum of its proper divisors (90791030352).

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

39780136368 is a wasteful number, since it uses less digits than its factorization.

39780136368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7632 (or 7620 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 39780136368 in words is "thirty-nine billion, seven hundred eighty million, one hundred thirty-six thousand, three hundred sixty-eight".