40205735854 has 16 divisors (see below), whose sum is σ = 60581289600. Its totient is φ = 20012113080.

The previous prime is 40205735839. The next prime is 40205735861. The reversal of 40205735854 is 45853750204.

It is a super-2 number, since 2×40205735854² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40205735854.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549097 + ... + 617995.

It is an arithmetic number, because the mean of its divisors is an integer number (3786330600).

Almost surely, 2^40205735854 is an apocalyptic number.

40205735854 is a deficient number, since it is larger than the sum of its proper divisors (20375553746).

40205735854 is a wasteful number, since it uses less digits than its factorization.

40205735854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70215.

The product of its (nonzero) digits is 672000, while the sum is 43.

The spelling of 40205735854 in words is "forty billion, two hundred five million, seven hundred thirty-five thousand, eight hundred fifty-four".