3656212543253 has 2 divisors, whose sum is σ = 3656212543254. Its totient is φ = 3656212543252.

The previous prime is 3656212543199. The next prime is 3656212543267. The reversal of 3656212543253 is 3523452126563.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2936418105604 + 719794437649 = 1713598^2 + 848407^2 .

It is a cyclic number.

It is not a de Polignac number, because 3656212543253 - 2²⁴ = 3656195766037 is a prime.

It is a super-2 number, since 2×3656212543253² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3656212543198 and 3656212543207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3656212543153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1828106271626 + 1828106271627.

It is an arithmetic number, because the mean of its divisors is an integer number (1828106271627).

Almost surely, 2^{3656212543253} is an apocalyptic number.

It is an amenable number.

3656212543253 is a deficient number, since it is larger than the sum of its proper divisors (1).

3656212543253 is an equidigital number, since it uses as much as digits as its factorization.

3656212543253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888000, while the sum is 47.

The spelling of 3656212543253 in words is "three trillion, six hundred fifty-six billion, two hundred twelve million, five hundred forty-three thousand, two hundred fifty-three".