40106066377765 has 4 divisors (see below), whose sum is σ = 48127279653324. Its totient is φ = 32084853102208.

The previous prime is 40106066377733. The next prime is 40106066377781. The reversal of 40106066377765 is 56777366060104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23987053884964 + 16119012492801 = 4897658^2 + 4014849^2 .

It is a cyclic number.

It is not a de Polignac number, because 40106066377765 - 2⁵ = 40106066377733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4010606637772 + ... + 4010606637781.

It is an arithmetic number, because the mean of its divisors is an integer number (12031819913331).

Almost surely, 2^{40106066377765} is an apocalyptic number.

It is an amenable number.

40106066377765 is a deficient number, since it is larger than the sum of its proper divisors (8021213275559).

40106066377765 is an equidigital number, since it uses as much as digits as its factorization.

40106066377765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8021213275558.

The product of its (nonzero) digits is 26671680, while the sum is 58.

The spelling of 40106066377765 in words is "forty trillion, one hundred six billion, sixty-six million, three hundred seventy-seven thousand, seven hundred sixty-five".