7271983457 has 2 divisors, whose sum is σ = 7271983458. Its totient is φ = 7271983456.

The previous prime is 7271983429. The next prime is 7271983471. The reversal of 7271983457 is 7543891727.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6133865761 + 1138117696 = 78319^2 + 33736^2 .

It is a cyclic number.

It is not a de Polignac number, because 7271983457 - 2¹⁶ = 7271917921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7271983399 and 7271983408.

It is not a weakly prime, because it can be changed into another prime (7271583457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3635991728 + 3635991729.

It is an arithmetic number, because the mean of its divisors is an integer number (3635991729).

Almost surely, 2^7271983457 is an apocalyptic number.

It is an amenable number.

7271983457 is a deficient number, since it is larger than the sum of its proper divisors (1).

7271983457 is an equidigital number, since it uses as much as digits as its factorization.

7271983457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2963520, while the sum is 53.

The square root of 7271983457 is about 85275.9254244714. The cubic root of 7271983457 is about 1937.3925590758.

The spelling of 7271983457 in words is "seven billion, two hundred seventy-one million, nine hundred eighty-three thousand, four hundred fifty-seven".