40209433840872 has 96 divisors (see below), whose sum is σ = 110375932867200. Its totient is φ = 13222548609408.

The previous prime is 40209433840871. The next prime is 40209433840973. The reversal of 40209433840872 is 27804833490204.

40209433840872 is a `hidden beast` number, since 40 + 20 + 9 + 433 + 84 + 0 + 8 + 72 = 666.

It is not an unprimeable number, because it can be changed into a prime (40209433840871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8357547 + ... + 12258362.

It is an arithmetic number, because the mean of its divisors is an integer number (1149749300700).

Almost surely, 2^{40209433840872} is an apocalyptic number.

It is an amenable number.

40209433840872 is an abundant number, since it is smaller than the sum of its proper divisors (70166499026328).

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

40209433840872 is a wasteful number, since it uses less digits than its factorization.

40209433840872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20616287 (or 20616280 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 54.

The spelling of 40209433840872 in words is "forty trillion, two hundred nine billion, four hundred thirty-three million, eight hundred forty thousand, eight hundred seventy-two".