10723216985 has 8 divisors (see below), whose sum is σ = 13857695880. Its totient is φ = 7918683264.

The previous prime is 10723216961. The next prime is 10723217003. The reversal of 10723216985 is 58961232701.

It can be written as a sum of positive squares in 4 ways, for example, as 705008704 + 10018208281 = 26552^2 + 100091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10723216985 - 2⁶ = 10723216921 is a prime.

It is a super-2 number, since 2×10723216985² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82486220 + ... + 82486349.

It is an arithmetic number, because the mean of its divisors is an integer number (1732211985).

Almost surely, 2^10723216985 is an apocalyptic number.

It is an amenable number.

10723216985 is a deficient number, since it is larger than the sum of its proper divisors (3134478895).

10723216985 is a wasteful number, since it uses less digits than its factorization.

10723216985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164972587.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 10723216985 in words is "ten billion, seven hundred twenty-three million, two hundred sixteen thousand, nine hundred eighty-five".