40163217135656 has 8 divisors (see below), whose sum is σ = 75306032129370. Its totient is φ = 20081608567824.

The previous prime is 40163217135641. The next prime is 40163217135659. The reversal of 40163217135656 is 65653171236104.

It can be written as a sum of positive squares in only one way, i.e., 20610601212100 + 19552615923556 = 4539890^2 + 4421834^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×40163217135656² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40163217135659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2510201070971 + ... + 2510201070986.

Almost surely, 2^{40163217135656} is an apocalyptic number.

It is an amenable number.

40163217135656 is a deficient number, since it is larger than the sum of its proper divisors (35142814993714).

40163217135656 is a wasteful number, since it uses less digits than its factorization.

40163217135656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020402141963 (or 5020402141959 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 50.

The spelling of 40163217135656 in words is "forty trillion, one hundred sixty-three billion, two hundred seventeen million, one hundred thirty-five thousand, six hundred fifty-six".