40203720205020 has 48 divisors (see below), whose sum is σ = 125078240639520. Its totient is φ = 10720992054528.

The previous prime is 40203720205009. The next prime is 40203720205027. The reversal of 40203720205020 is 2050202730204.

40203720205020 is a `hidden beast` number, since 402 + 0 + 3 + 7 + 202 + 0 + 50 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40203720205027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37225666317 + ... + 37225667396.

It is an arithmetic number, because the mean of its divisors is an integer number (2605796679990).

Almost surely, 2^{40203720205020} is an apocalyptic number.

It is an amenable number.

40203720205020 is an abundant number, since it is smaller than the sum of its proper divisors (84874520434500).

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

40203720205020 is a wasteful number, since it uses less digits than its factorization.

40203720205020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74451333731 (or 74451333723 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

Adding to 40203720205020 its reverse (2050202730204), we get a palindrome (42253922935224).

The spelling of 40203720205020 in words is "forty trillion, two hundred three billion, seven hundred twenty million, two hundred five thousand, twenty".