253216534653 has 12 divisors (see below), whose sum is σ = 365817522460. Its totient is φ = 168783189696.

The previous prime is 253216534651. The next prime is 253216534661. The reversal of 253216534653 is 356435612352.

253216534653 is a `hidden beast` number, since 2 + 53 + 2 + 1 + 6 + 534 + 65 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 123603574329 + 129612960324 = 351573^2 + 360018^2 .

It is not a de Polignac number, because 253216534653 - 2¹ = 253216534651 is a prime.

It is a super-4 number, since 4×253216534653⁴ (a number of 47 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253216534599 and 253216534608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253216534651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2261758 + ... + 2371071.

Almost surely, 2^253216534653 is an apocalyptic number.

It is an amenable number.

253216534653 is a deficient number, since it is larger than the sum of its proper divisors (112600987807).

253216534653 is a wasteful number, since it uses less digits than its factorization.

253216534653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4638908 (or 4638905 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 45.

The spelling of 253216534653 in words is "two hundred fifty-three billion, two hundred sixteen million, five hundred thirty-four thousand, six hundred fifty-three".