40167752509 has 2 divisors, whose sum is σ = 40167752510. Its totient is φ = 40167752508.

The previous prime is 40167752489. The next prime is 40167752531. The reversal of 40167752509 is 90525776104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40111277284 + 56475225 = 200278^2 + 7515^2 .

It is a cyclic number.

It is not a de Polignac number, because 40167752509 - 2⁷ = 40167752381 is a prime.

It is a super-2 number, since 2×40167752509² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40167759509) 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 as a sum of consecutive naturals, namely, 20083876254 + 20083876255.

It is an arithmetic number, because the mean of its divisors is an integer number (20083876255).

Almost surely, 2^40167752509 is an apocalyptic number.

It is an amenable number.

40167752509 is a deficient number, since it is larger than the sum of its proper divisors (1).

40167752509 is an equidigital number, since it uses as much as digits as its factorization.

40167752509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 46.

The spelling of 40167752509 in words is "forty billion, one hundred sixty-seven million, seven hundred fifty-two thousand, five hundred nine".