40216122765 has 48 divisors (see below), whose sum is σ = 85794403968. Its totient is φ = 16970318208.

The previous prime is 40216122719. The next prime is 40216122809. The reversal of 40216122765 is 56722161204.

It is a happy number.

40216122765 is a `hidden beast` number, since 402 + 161 + 22 + 76 + 5 = 666.

It is not a de Polignac number, because 40216122765 - 2¹¹ = 40216120717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4906299 + ... + 4914488.

It is an arithmetic number, because the mean of its divisors is an integer number (1787383416).

Almost surely, 2^40216122765 is an apocalyptic number.

40216122765 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40216122765 is an abundant number, since it is smaller than the sum of its proper divisors (45578281203).

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

40216122765 is a wasteful number, since it uses less digits than its factorization.

40216122765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9820818 (or 9820815 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

Adding to 40216122765 its reverse (56722161204), we get a palindrome (96938283969).

The spelling of 40216122765 in words is "forty billion, two hundred sixteen million, one hundred twenty-two thousand, seven hundred sixty-five".