40106605345866 has 12 divisors (see below), whose sum is σ = 86897644916082. Its totient is φ = 13368868448616.

The previous prime is 40106605345813. The next prime is 40106605345889. The reversal of 40106605345866 is 66854350660104.

40106605345866 is a `hidden beast` number, since 4 + 0 + 1 + 0 + 6 + 6 + 0 + 53 + 4 + 586 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 38362898300841 + 1743707045025 = 6193779^2 + 1320495^2 .

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1114072370701 + ... + 1114072370736.

Almost surely, 2^{40106605345866} is an apocalyptic number.

40106605345866 is an abundant number, since it is smaller than the sum of its proper divisors (46791039570216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40106605345866 is a wasteful number, since it uses less digits than its factorization.

40106605345866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228144741445 (or 2228144741442 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 54.

The spelling of 40106605345866 in words is "forty trillion, one hundred six billion, six hundred five million, three hundred forty-five thousand, eight hundred sixty-six".