406440266601 has 16 divisors (see below), whose sum is σ = 573429104640. Its totient is φ = 255355134480.

The previous prime is 406440266569. The next prime is 406440266611. The reversal of 406440266601 is 106662044604.

It is not a de Polignac number, because 406440266601 - 2⁵ = 406440266569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 406440266601.

It is not an unprimeable number, because it can be changed into a prime (406440266611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18655425 + ... + 18677198.

It is an arithmetic number, because the mean of its divisors is an integer number (35839319040).

Almost surely, 2^406440266601 is an apocalyptic number.

It is an amenable number.

406440266601 is a deficient number, since it is larger than the sum of its proper divisors (166988838039).

406440266601 is a wasteful number, since it uses less digits than its factorization.

406440266601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37332836.

The product of its (nonzero) digits is 165888, while the sum is 39.

The spelling of 406440266601 in words is "four hundred six billion, four hundred forty million, two hundred sixty-six thousand, six hundred one".