40245217173 has 80 divisors (see below), whose sum is σ = 71932962816. Its totient is φ = 21924444960.

The previous prime is 40245217153. The next prime is 40245217193. The reversal of 40245217173 is 37171254204.

40245217173 is a `hidden beast` number, since 40 + 24 + 521 + 7 + 1 + 73 = 666.

It is an interprime number because it is at equal distance from previous prime (40245217153) and next prime (40245217193).

It is not a de Polignac number, because 40245217173 - 2¹³ = 40245208981 is a prime.

It is a super-2 number, since 2×40245217173² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40245217123) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4050790 + ... + 4060712.

Almost surely, 2^40245217173 is an apocalyptic number.

It is an amenable number.

40245217173 is a deficient number, since it is larger than the sum of its proper divisors (31687745643).

40245217173 is a wasteful number, since it uses less digits than its factorization.

40245217173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10276 (or 10267 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The spelling of 40245217173 in words is "forty billion, two hundred forty-five million, two hundred seventeen thousand, one hundred seventy-three".