7748647273 has 2 divisors, whose sum is σ = 7748647274. Its totient is φ = 7748647272.

The previous prime is 7748647271. The next prime is 7748647321. The reversal of 7748647273 is 3727468477.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6391682704 + 1356964569 = 79948^2 + 36837^2 .

It is an emirp because it is prime and its reverse (3727468477) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7748647273 - 2¹ = 7748647271 is a prime.

It is a super-2 number, since 2×7748647273² (a number of 21 digits) contains 22 as substring.

Together with 7748647271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7748647271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3874323636 + 3874323637.

It is an arithmetic number, because the mean of its divisors is an integer number (3874323637).

Almost surely, 2^7748647273 is an apocalyptic number.

It is an amenable number.

7748647273 is a deficient number, since it is larger than the sum of its proper divisors (1).

7748647273 is an equidigital number, since it uses as much as digits as its factorization.

7748647273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11063808, while the sum is 55.

The square root of 7748647273 is about 88026.4009999273. The cubic root of 7748647273 is about 1978.8306594988.

The spelling of 7748647273 in words is "seven billion, seven hundred forty-eight million, six hundred forty-seven thousand, two hundred seventy-three".