40206611517 has 4 divisors (see below), whose sum is σ = 53608815360. Its totient is φ = 26804407676.

The previous prime is 40206611449. The next prime is 40206611527. The reversal of 40206611517 is 71511660204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40206611517 - 2¹⁴ = 40206595133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40206611527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6701101917 + ... + 6701101922.

It is an arithmetic number, because the mean of its divisors is an integer number (13402203840).

Almost surely, 2^40206611517 is an apocalyptic number.

It is an amenable number.

40206611517 is a deficient number, since it is larger than the sum of its proper divisors (13402203843).

40206611517 is a wasteful number, since it uses less digits than its factorization.

40206611517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13402203842.

The product of its (nonzero) digits is 10080, while the sum is 33.

The spelling of 40206611517 in words is "forty billion, two hundred six million, six hundred eleven thousand, five hundred seventeen".