40726272455666 has 16 divisors (see below), whose sum is σ = 69882895700160. Its totient is φ = 17437509608400.

The previous prime is 40726272455641. The next prime is 40726272455681. The reversal of 40726272455666 is 66655427262704.

It is a junction number, because it is equal to n+sod(n) for n = 40726272455599 and 40726272455608.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1383914621 + ... + 1383944048.

It is an arithmetic number, because the mean of its divisors is an integer number (4367680981260).

Almost surely, 2^{40726272455666} is an apocalyptic number.

40726272455666 is a deficient number, since it is larger than the sum of its proper divisors (29156623244494).

40726272455666 is a wasteful number, since it uses less digits than its factorization.

40726272455666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767859729.

The product of its (nonzero) digits is 203212800, while the sum is 62.

The spelling of 40726272455666 in words is "forty trillion, seven hundred twenty-six billion, two hundred seventy-two million, four hundred fifty-five thousand, six hundred sixty-six".