2687204553653 has 2 divisors, whose sum is σ = 2687204553654. Its totient is φ = 2687204553652.

The previous prime is 2687204553559. The next prime is 2687204553707. The reversal of 2687204553653 is 3563554027862.

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., 2526805905649 + 160398648004 = 1589593^2 + 400498^2 .

It is a cyclic number.

It is not a de Polignac number, because 2687204553653 - 2⁴⁰ = 1587692925877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2687204553353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1343602276826 + 1343602276827.

It is an arithmetic number, because the mean of its divisors is an integer number (1343602276827).

Almost surely, 2^{2687204553653} is an apocalyptic number.

It is an amenable number.

2687204553653 is a deficient number, since it is larger than the sum of its proper divisors (1).

2687204553653 is an equidigital number, since it uses as much as digits as its factorization.

2687204553653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288000, while the sum is 56.

The spelling of 2687204553653 in words is "two trillion, six hundred eighty-seven billion, two hundred four million, five hundred fifty-three thousand, six hundred fifty-three".