16868620053 has 6 divisors (see below), whose sum is σ = 24365784534. Its totient is φ = 11245746696.

The previous prime is 16868620019. The next prime is 16868620099. The reversal of 16868620053 is 35002686861.

16868620053 is a `hidden beast` number, since 16 + 8 + 6 + 8 + 620 + 0 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12867045489 + 4001574564 = 113433^2 + 63258^2 .

It is not a de Polignac number, because 16868620053 - 2¹² = 16868615957 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16868619990 and 16868620008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16868620253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 937145550 + ... + 937145567.

It is an arithmetic number, because the mean of its divisors is an integer number (4060964089).

Almost surely, 2^16868620053 is an apocalyptic number.

It is an amenable number.

16868620053 is a deficient number, since it is larger than the sum of its proper divisors (7497164481).

16868620053 is a wasteful number, since it uses less digits than its factorization.

16868620053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874291123 (or 1874291120 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 16868620053 in words is "sixteen billion, eight hundred sixty-eight million, six hundred twenty thousand, fifty-three".