40065382079 has 4 divisors (see below), whose sum is σ = 40065864384. Its totient is φ = 40064899776.

The previous prime is 40065382073. The next prime is 40065382087. The reversal of 40065382079 is 97028356004.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40065382079 - 2²⁰ = 40064333503 is a prime.

It is a super-2 number, since 2×40065382079² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40065382073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81167 + ... + 294480.

It is an arithmetic number, because the mean of its divisors is an integer number (10016466096).

Almost surely, 2^40065382079 is an apocalyptic number.

40065382079 is a deficient number, since it is larger than the sum of its proper divisors (482305).

40065382079 is a wasteful number, since it uses less digits than its factorization.

40065382079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482304.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 40065382079 in words is "forty billion, sixty-five million, three hundred eighty-two thousand, seventy-nine".