40697817169 has 9 divisors (see below), whose sum is σ = 41328039081. Its totient is φ = 40077072420.

The previous prime is 40697817157. The next prime is 40697817241. The reversal of 40697817169 is 96171879604.

The square root of 40697817169 is 201737.

It is a perfect power (a square), and thus also a powerful number.

40697817169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40697817169 - 2²⁹ = 40160946257 is a prime.

It is a super-2 number, since 2×40697817169² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40697887169) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13514874 + ... + 13517884.

Almost surely, 2^40697817169 is an apocalyptic number.

40697817169 is the 201737-th square number.

40697817169 is the 100869-th centered octagonal number.

It is an amenable number.

40697817169 is a deficient number, since it is larger than the sum of its proper divisors (630221912).

40697817169 is an frugal number, since it uses more digits than its factorization.

40697817169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6156 (or 3078 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 58.

The spelling of 40697817169 in words is "forty billion, six hundred ninety-seven million, eight hundred seventeen thousand, one hundred sixty-nine".