217074054724 has 12 divisors (see below), whose sum is σ = 385083426364. Its totient is φ = 107050218624.

The previous prime is 217074054719. The next prime is 217074054749. The reversal of 217074054724 is 427450470712.

It can be written as a sum of positive squares in 2 ways, for example, as 116437912900 + 100636141824 = 341230^2 + 317232^2 .

It is a super-2 number, since 2×217074054724² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371701857 + ... + 371702440.

Almost surely, 2^217074054724 is an apocalyptic number.

It is an amenable number.

217074054724 is a deficient number, since it is larger than the sum of its proper divisors (168009371640).

217074054724 is a wasteful number, since it uses less digits than its factorization.

217074054724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743404374 (or 743404372 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 43.

The spelling of 217074054724 in words is "two hundred seventeen billion, seventy-four million, fifty-four thousand, seven hundred twenty-four".