2631534362221 has 2 divisors, whose sum is σ = 2631534362222. Its totient is φ = 2631534362220.

The previous prime is 2631534362189. The next prime is 2631534362267. The reversal of 2631534362221 is 1222634351362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2043841936900 + 587692425321 = 1429630^2 + 766611^2 .

It is a cyclic number.

It is not a de Polignac number, because 2631534362221 - 2⁵ = 2631534362189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2631534062221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1315767181110 + 1315767181111.

It is an arithmetic number, because the mean of its divisors is an integer number (1315767181111).

Almost surely, 2^{2631534362221} is an apocalyptic number.

It is an amenable number.

2631534362221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2631534362221 is an equidigital number, since it uses as much as digits as its factorization.

2631534362221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 40.

The spelling of 2631534362221 in words is "two trillion, six hundred thirty-one billion, five hundred thirty-four million, three hundred sixty-two thousand, two hundred twenty-one".