40169521706617 has 2 divisors, whose sum is σ = 40169521706618. Its totient is φ = 40169521706616.

The previous prime is 40169521706603. The next prime is 40169521706659. The reversal of 40169521706617 is 71660712596104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36409505972841 + 3760015733776 = 6034029^2 + 1939076^2 .

It is a cyclic number.

It is not a de Polignac number, because 40169521706617 - 2¹⁵ = 40169521673849 is a prime.

It is a super-2 number, since 2×40169521706617² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40169521716617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20084760853308 + 20084760853309.

It is an arithmetic number, because the mean of its divisors is an integer number (20084760853309).

Almost surely, 2^{40169521706617} is an apocalyptic number.

It is an amenable number.

40169521706617 is a deficient number, since it is larger than the sum of its proper divisors (1).

40169521706617 is an equidigital number, since it uses as much as digits as its factorization.

40169521706617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 40169521706617 in words is "forty trillion, one hundred sixty-nine billion, five hundred twenty-one million, seven hundred six thousand, six hundred seventeen".