40666126063 has 4 divisors (see below), whose sum is σ = 40666565440. Its totient is φ = 40665686688.

The previous prime is 40666126049. The next prime is 40666126117. The reversal of 40666126063 is 36062166604.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40666126063 - 2¹³ = 40666117871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40666120063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20895 + ... + 285952.

It is an arithmetic number, because the mean of its divisors is an integer number (10166641360).

Almost surely, 2^40666126063 is an apocalyptic number.

40666126063 is a deficient number, since it is larger than the sum of its proper divisors (439377).

40666126063 is a wasteful number, since it uses less digits than its factorization.

40666126063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439376.

The product of its (nonzero) digits is 186624, while the sum is 40.

The spelling of 40666126063 in words is "forty billion, six hundred sixty-six million, one hundred twenty-six thousand, sixty-three".