163700740004481 has 27 divisors (see below), whose sum is σ = 237673983234441. Its totient is φ = 108574832386944.

The previous prime is 163700740004471. The next prime is 163700740004489. The reversal of 163700740004481 is 184400047007361.

The square root of 163700740004481 is 12794559.

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

163700740004481 is a `hidden beast` number, since 1 + 63 + 70 + 0 + 7 + 40 + 0 + 0 + 4 + 481 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 39438086000625 + 124262654003856 = 6279975^2 + 11147316^2 .

It is not a de Polignac number, because 163700740004481 - 2²⁹ = 163700203133569 is a prime.

It is a super-2 number, since 2×163700740004481² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163700740004489) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7561573545 + ... + 7561595193.

Almost surely, 2^{163700740004481} is an apocalyptic number.

163700740004481 is the 12794559-th square number.

163700740004481 is the 6397280-th centered octagonal number.

It is an amenable number.

163700740004481 is a deficient number, since it is larger than the sum of its proper divisors (73973243229960).

163700740004481 is an frugal number, since it uses more digits than its factorization.

163700740004481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43698 (or 21849 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 163700740004481 in words is "one hundred sixty-three trillion, seven hundred billion, seven hundred forty million, four thousand, four hundred eighty-one".