40001366340655 has 16 divisors (see below), whose sum is σ = 49027185285120. Its totient is φ = 31317513571872.

The previous prime is 40001366340647. The next prime is 40001366340673. The reversal of 40001366340655 is 55604366310004.

It is a cyclic number.

It is not a de Polignac number, because 40001366340655 - 2³ = 40001366340647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4622295 + ... + 10068184.

It is an arithmetic number, because the mean of its divisors is an integer number (3064199080320).

Almost surely, 2^{40001366340655} is an apocalyptic number.

40001366340655 is a deficient number, since it is larger than the sum of its proper divisors (9025818944465).

40001366340655 is a wasteful number, since it uses less digits than its factorization.

40001366340655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14702118.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 40001366340655 in words is "forty trillion, one billion, three hundred sixty-six million, three hundred forty thousand, six hundred fifty-five".