74656865653 has 2 divisors, whose sum is σ = 74656865654. Its totient is φ = 74656865652.

The previous prime is 74656865639. The next prime is 74656865677. The reversal of 74656865653 is 35656865647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67453439524 + 7203426129 = 259718^2 + 84873^2 .

It is a cyclic number.

It is not a de Polignac number, because 74656865653 - 2³³ = 66066931061 is a prime.

It is a super-3 number, since 3×74656865653³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 74656865591 and 74656865600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74656865453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37328432826 + 37328432827.

It is an arithmetic number, because the mean of its divisors is an integer number (37328432827).

Almost surely, 2^74656865653 is an apocalyptic number.

It is an amenable number.

74656865653 is a deficient number, since it is larger than the sum of its proper divisors (1).

74656865653 is an equidigital number, since it uses as much as digits as its factorization.

74656865653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864000, while the sum is 61.

The spelling of 74656865653 in words is "seventy-four billion, six hundred fifty-six million, eight hundred sixty-five thousand, six hundred fifty-three".