7263787261 has 2 divisors, whose sum is σ = 7263787262. Its totient is φ = 7263787260.

The previous prime is 7263787259. The next prime is 7263787291. The reversal of 7263787261 is 1627873627.

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., 7175784100 + 88003161 = 84710^2 + 9381^2 .

It is a cyclic number.

It is not a de Polignac number, because 7263787261 - 2¹ = 7263787259 is a prime.

Together with 7263787259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7263787231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3631893630 + 3631893631.

It is an arithmetic number, because the mean of its divisors is an integer number (3631893631).

Almost surely, 2^7263787261 is an apocalyptic number.

It is an amenable number.

7263787261 is a deficient number, since it is larger than the sum of its proper divisors (1).

7263787261 is an equidigital number, since it uses as much as digits as its factorization.

7263787261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1185408, while the sum is 49.

The square root of 7263787261 is about 85227.8549595143. The cubic root of 7263787261 is about 1936.6644120822.

The spelling of 7263787261 in words is "seven billion, two hundred sixty-three million, seven hundred eighty-seven thousand, two hundred sixty-one".