40666126064 has 10 divisors (see below), whose sum is σ = 78790619280. Its totient is φ = 20333063024.

The previous prime is 40666126049. The next prime is 40666126117. The reversal of 40666126064 is 46062166604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270816424 + ... + 1270816455.

It is an arithmetic number, because the mean of its divisors is an integer number (7879061928).

Almost surely, 2^40666126064 is an apocalyptic number.

It is an amenable number.

40666126064 is a deficient number, since it is larger than the sum of its proper divisors (38124493216).

40666126064 is a wasteful number, since it uses less digits than its factorization.

40666126064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541632887 (or 2541632881 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 40666126064 in words is "forty billion, six hundred sixty-six million, one hundred twenty-six thousand, sixty-four".