40166304220723 has 8 divisors (see below), whose sum is σ = 43311547555920. Its totient is φ = 37124183617920.

The previous prime is 40166304220687. The next prime is 40166304220829. The reversal of 40166304220723 is 32702240366104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-40166304220723 is a prime.

It is a super-2 number, since 2×40166304220723² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40166304220123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25780682290 + ... + 25780683847.

It is an arithmetic number, because the mean of its divisors is an integer number (5413943444490).

Almost surely, 2^{40166304220723} is an apocalyptic number.

40166304220723 is a deficient number, since it is larger than the sum of its proper divisors (3145243335197).

40166304220723 is a wasteful number, since it uses less digits than its factorization.

40166304220723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51561366197.

The product of its (nonzero) digits is 290304, while the sum is 40.

Adding to 40166304220723 its reverse (32702240366104), we get a palindrome (72868544586827).

The spelling of 40166304220723 in words is "forty trillion, one hundred sixty-six billion, three hundred four million, two hundred twenty thousand, seven hundred twenty-three".