40361812020 has 72 divisors (see below), whose sum is σ = 122695512576. Its totient is φ = 10739881152.

The previous prime is 40361811991. The next prime is 40361812069. The reversal of 40361812020 is 2021816304.

40361812020 is a `hidden beast` number, since 4 + 0 + 3 + 618 + 1 + 20 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158812 + ... + 325491.

Almost surely, 2^40361812020 is an apocalyptic number.

It is an amenable number.

40361812020 is an abundant number, since it is smaller than the sum of its proper divisors (82333700556).

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

40361812020 is a wasteful number, since it uses less digits than its factorization.

40361812020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484781 (or 484776 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The spelling of 40361812020 in words is "forty billion, three hundred sixty-one million, eight hundred twelve thousand, twenty".