6910690632221 has 2 divisors, whose sum is σ = 6910690632222. Its totient is φ = 6910690632220.

The previous prime is 6910690632193. The next prime is 6910690632353. The reversal of 6910690632221 is 1222360960196.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6233261222500 + 677429409721 = 2496650^2 + 823061^2 .

It is a cyclic number.

It is not a de Polignac number, because 6910690632221 - 2³⁸ = 6635812725277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6910690682221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3455345316110 + 3455345316111.

It is an arithmetic number, because the mean of its divisors is an integer number (3455345316111).

Almost surely, 2^{6910690632221} is an apocalyptic number.

It is an amenable number.

6910690632221 is a deficient number, since it is larger than the sum of its proper divisors (1).

6910690632221 is an equidigital number, since it uses as much as digits as its factorization.

6910690632221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 6910690632221 in words is "six trillion, nine hundred ten billion, six hundred ninety million, six hundred thirty-two thousand, two hundred twenty-one".