39820450243140 has 108 divisors (see below), whose sum is σ = 140509303031916. Its totient is φ = 9101817196416.

The previous prime is 39820450243121. The next prime is 39820450243151. The reversal of 39820450243140 is 4134205402893.

39820450243140 is a `hidden beast` number, since 3 + 9 + 8 + 204 + 5 + 0 + 2 + 431 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19498512466944 + 20321937776196 = 4415712^2 + 4507986^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2257386319 + ... + 2257403958.

Almost surely, 2^{39820450243140} is an apocalyptic number.

39820450243140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39820450243140 is an abundant number, since it is smaller than the sum of its proper divisors (100688852788776).

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

39820450243140 is a wasteful number, since it uses less digits than its factorization.

39820450243140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4514790306 (or 4514790294 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 39820450243140 in words is "thirty-nine trillion, eight hundred twenty billion, four hundred fifty million, two hundred forty-three thousand, one hundred forty".