217056754144 has 12 divisors (see below), whose sum is σ = 427330484784. Its totient is φ = 108528377056.

The previous prime is 217056754141. The next prime is 217056754207. The reversal of 217056754144 is 441457650712.

It is a super-2 number, since 2×217056754144² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 217056754094 and 217056754103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217056754141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3391511752 + ... + 3391511815.

It is an arithmetic number, because the mean of its divisors is an integer number (35610873732).

Almost surely, 2^217056754144 is an apocalyptic number.

It is an amenable number.

217056754144 is a deficient number, since it is larger than the sum of its proper divisors (210273730640).

217056754144 is an equidigital number, since it uses as much as digits as its factorization.

217056754144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6783023577 (or 6783023569 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 46.

The spelling of 217056754144 in words is "two hundred seventeen billion, fifty-six million, seven hundred fifty-four thousand, one hundred forty-four".