40376666657 has 4 divisors (see below), whose sum is σ = 41467927956. Its totient is φ = 39285405360.

The previous prime is 40376666641. The next prime is 40376666683. The reversal of 40376666657 is 75666667304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18929357056 + 21447309601 = 137584^2 + 146449^2 .

It is a cyclic number.

It is not a de Polignac number, because 40376666657 - 2⁴ = 40376666641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40376666857) 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, 545630594 + ... + 545630667.

It is an arithmetic number, because the mean of its divisors is an integer number (10366981989).

Almost surely, 2^40376666657 is an apocalyptic number.

It is an amenable number.

40376666657 is a deficient number, since it is larger than the sum of its proper divisors (1091261299).

40376666657 is a wasteful number, since it uses less digits than its factorization.

40376666657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091261298.

The product of its (nonzero) digits is 22861440, while the sum is 56.

The spelling of 40376666657 in words is "forty billion, three hundred seventy-six million, six hundred sixty-six thousand, six hundred fifty-seven".