39986880780 has 576 divisors, whose sum is σ = 148499398656. Its totient is φ = 7801920000.

The previous prime is 39986880779. The next prime is 39986880793. The reversal of 39986880780 is 8708868993.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 264813705 + ... + 264813855.

It is an arithmetic number, because the mean of its divisors is an integer number (257811456).

Almost surely, 2^39986880780 is an apocalyptic number.

39986880780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39986880780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74249699328).

39986880780 is an abundant number, since it is smaller than the sum of its proper divisors (108512517876).

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

39986880780 is a wasteful number, since it uses less digits than its factorization.

39986880780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 66.

The spelling of 39986880780 in words is "thirty-nine billion, nine hundred eighty-six million, eight hundred eighty thousand, seven hundred eighty".