7954940262221 has 2 divisors, whose sum is σ = 7954940262222. Its totient is φ = 7954940262220.

The previous prime is 7954940262167. The next prime is 7954940262263. The reversal of 7954940262221 is 1222620494597.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5694761776900 + 2260178485321 = 2386370^2 + 1503389^2 .

It is a cyclic number.

It is not a de Polignac number, because 7954940262221 - 2³⁴ = 7937760393037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7954940261221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3977470131110 + 3977470131111.

It is an arithmetic number, because the mean of its divisors is an integer number (3977470131111).

Almost surely, 2^{7954940262221} is an apocalyptic number.

It is an amenable number.

7954940262221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7954940262221 is an equidigital number, since it uses as much as digits as its factorization.

7954940262221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 7954940262221 in words is "seven trillion, nine hundred fifty-four billion, nine hundred forty million, two hundred sixty-two thousand, two hundred twenty-one".