40244791669 has 2 divisors, whose sum is σ = 40244791670. Its totient is φ = 40244791668.

The previous prime is 40244791597. The next prime is 40244791693. The reversal of 40244791669 is 96619744204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39830180625 + 414611044 = 199575^2 + 20362^2 .

It is a cyclic number.

It is not a de Polignac number, because 40244791669 - 2¹¹ = 40244789621 is a prime.

It is a super-2 number, since 2×40244791669² (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 (40244791369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20122395834 + 20122395835.

It is an arithmetic number, because the mean of its divisors is an integer number (20122395835).

Almost surely, 2^40244791669 is an apocalyptic number.

It is an amenable number.

40244791669 is a deficient number, since it is larger than the sum of its proper divisors (1).

40244791669 is an equidigital number, since it uses as much as digits as its factorization.

40244791669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 40244791669 in words is "forty billion, two hundred forty-four million, seven hundred ninety-one thousand, six hundred sixty-nine".