7671220652281 has 2 divisors, whose sum is σ = 7671220652282. Its totient is φ = 7671220652280.

The previous prime is 7671220652269. The next prime is 7671220652309. The reversal of 7671220652281 is 1822560221767.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4549620744256 + 3121599908025 = 2132984^2 + 1766805^2 .

It is a cyclic number.

It is not a de Polignac number, because 7671220652281 - 2⁷ = 7671220652153 is a prime.

It is a super-2 number, since 2×7671220652281² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7671220652681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3835610326140 + 3835610326141.

It is an arithmetic number, because the mean of its divisors is an integer number (3835610326141).

Almost surely, 2^{7671220652281} is an apocalyptic number.

It is an amenable number.

7671220652281 is a deficient number, since it is larger than the sum of its proper divisors (1).

7671220652281 is an equidigital number, since it uses as much as digits as its factorization.

7671220652281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 7671220652281 in words is "seven trillion, six hundred seventy-one billion, two hundred twenty million, six hundred fifty-two thousand, two hundred eighty-one".