217540125567453 has 32 divisors (see below), whose sum is σ = 323153589306240. Its totient is φ = 129247785112320.

The previous prime is 217540125567451. The next prime is 217540125567467. The reversal of 217540125567453 is 354765521045712.

217540125567453 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 217540125567453 - 2¹ = 217540125567451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 217540125567393 and 217540125567402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217540125567451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16389598 + ... + 26527328.

It is an arithmetic number, because the mean of its divisors is an integer number (10098549665820).

Almost surely, 2^{217540125567453} is an apocalyptic number.

It is an amenable number.

217540125567453 is a deficient number, since it is larger than the sum of its proper divisors (105613463738787).

217540125567453 is a wasteful number, since it uses less digits than its factorization.

217540125567453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10156749.

The product of its (nonzero) digits is 35280000, while the sum is 57.

The spelling of 217540125567453 in words is "two hundred seventeen trillion, five hundred forty billion, one hundred twenty-five million, five hundred sixty-seven thousand, four hundred fifty-three".