40666910566465 has 32 divisors (see below), whose sum is σ = 49572915649920. Its totient is φ = 32022855115776.

The previous prime is 40666910566459. The next prime is 40666910566507. The reversal of 40666910566465 is 56466501966604.

It is a cyclic number.

It is not a de Polignac number, because 40666910566465 - 2⁴³ = 31870817544257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40666910566397 and 40666910566406.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86073246 + ... + 86544424.

It is an arithmetic number, because the mean of its divisors is an integer number (1549153614060).

Almost surely, 2^{40666910566465} is an apocalyptic number.

It is an amenable number.

40666910566465 is a deficient number, since it is larger than the sum of its proper divisors (8906005083455).

40666910566465 is a wasteful number, since it uses less digits than its factorization.

40666910566465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472353.

The product of its (nonzero) digits is 167961600, while the sum is 64.

The spelling of 40666910566465 in words is "forty trillion, six hundred sixty-six billion, nine hundred ten million, five hundred sixty-six thousand, four hundred sixty-five".