40805264879 has 2 divisors, whose sum is σ = 40805264880. Its totient is φ = 40805264878.

The previous prime is 40805264869. The next prime is 40805264893. The reversal of 40805264879 is 97846250804.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40805264879 is a prime.

It is a super-3 number, since 3×40805264879³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40805264879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40805264809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20402632439 + 20402632440.

It is an arithmetic number, because the mean of its divisors is an integer number (20402632440).

Almost surely, 2^40805264879 is an apocalyptic number.

40805264879 is a deficient number, since it is larger than the sum of its proper divisors (1).

40805264879 is an equidigital number, since it uses as much as digits as its factorization.

40805264879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 40805264879 in words is "forty billion, eight hundred five million, two hundred sixty-four thousand, eight hundred seventy-nine".