40161217193 has 2 divisors, whose sum is σ = 40161217194. Its totient is φ = 40161217192.

The previous prime is 40161217189. The next prime is 40161217241. The reversal of 40161217193 is 39171216104.

40161217193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40019202304 + 142014889 = 200048^2 + 11917^2 .

It is a cyclic number.

It is not a de Polignac number, because 40161217193 - 2² = 40161217189 is a prime.

It is a super-2 number, since 2×40161217193² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40161267193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20080608596 + 20080608597.

It is an arithmetic number, because the mean of its divisors is an integer number (20080608597).

Almost surely, 2^40161217193 is an apocalyptic number.

It is an amenable number.

40161217193 is a deficient number, since it is larger than the sum of its proper divisors (1).

40161217193 is an equidigital number, since it uses as much as digits as its factorization.

40161217193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 40161217193 in words is "forty billion, one hundred sixty-one million, two hundred seventeen thousand, one hundred ninety-three".