3216604661253 has 6 divisors (see below), whose sum is σ = 4646206732934. Its totient is φ = 2144403107496.

The previous prime is 3216604661243. The next prime is 3216604661267. The reversal of 3216604661253 is 3521664066123.

3216604661253 is a `hidden beast` number, since 3 + 2 + 1 + 6 + 60 + 466 + 125 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1998358258689 + 1218246402564 = 1413633^2 + 1103742^2 .

It is not a de Polignac number, because 3216604661253 - 2³⁶ = 3147885184517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3216604661199 and 3216604661208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3216604661243) 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, 178700258950 + ... + 178700258967.

Almost surely, 2^{3216604661253} is an apocalyptic number.

It is an amenable number.

3216604661253 is a deficient number, since it is larger than the sum of its proper divisors (1429602071681).

3216604661253 is a wasteful number, since it uses less digits than its factorization.

3216604661253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357400517923 (or 357400517920 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 3216604661253 in words is "three trillion, two hundred sixteen billion, six hundred four million, six hundred sixty-one thousand, two hundred fifty-three".