40621062145666 has 8 divisors (see below), whose sum is σ = 60931631423484. Its totient is φ = 20310518337840.

The previous prime is 40621062145621. The next prime is 40621062145681. The reversal of 40621062145666 is 66654126012604.

It can be written as a sum of positive squares in 2 ways, for example, as 27787436561641 + 12833625584025 = 5271379^2 + 3582405^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1694445 + ... + 9171328.

Almost surely, 2^{40621062145666} is an apocalyptic number.

40621062145666 is a deficient number, since it is larger than the sum of its proper divisors (20310569277818).

40621062145666 is a wasteful number, since it uses less digits than its factorization.

40621062145666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12734996.

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 40621062145666 in words is "forty trillion, six hundred twenty-one billion, sixty-two million, one hundred forty-five thousand, six hundred sixty-six".