40001366342503 has 6 divisors (see below), whose sum is σ = 42492800924696. Its totient is φ = 37648344792672.

The previous prime is 40001366342489. The next prime is 40001366342507. The reversal of 40001366342503 is 30524366310004.

It is not a de Polignac number, because 40001366342503 - 2¹⁷ = 40001366211431 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 (40001366342507) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69206515875 + ... + 69206516452.

Almost surely, 2^{40001366342503} is an apocalyptic number.

40001366342503 is a deficient number, since it is larger than the sum of its proper divisors (2491434582193).

40001366342503 is a wasteful number, since it uses less digits than its factorization.

40001366342503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138413032361 (or 138413032344 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 37.

The spelling of 40001366342503 in words is "forty trillion, one billion, three hundred sixty-six million, three hundred forty-two thousand, five hundred three".