40094178769 has 2 divisors, whose sum is σ = 40094178770. Its totient is φ = 40094178768.

The previous prime is 40094178763. The next prime is 40094178797. The reversal of 40094178769 is 96787149004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28540723600 + 11553455169 = 168940^2 + 107487^2 .

It is a cyclic number.

It is not a de Polignac number, because 40094178769 - 2²⁹ = 39557307857 is a prime.

It is a super-2 number, since 2×40094178769² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40094178763) 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, 20047089384 + 20047089385.

It is an arithmetic number, because the mean of its divisors is an integer number (20047089385).

Almost surely, 2^40094178769 is an apocalyptic number.

It is an amenable number.

40094178769 is a deficient number, since it is larger than the sum of its proper divisors (1).

40094178769 is an equidigital number, since it uses as much as digits as its factorization.

40094178769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 55.

It can be divided in two parts, 400941 and 78769, that added together give a triangular number (479710 = T₉₇₉).

The spelling of 40094178769 in words is "forty billion, ninety-four million, one hundred seventy-eight thousand, seven hundred sixty-nine".