7115780537 has 2 divisors, whose sum is σ = 7115780538. Its totient is φ = 7115780536.

The previous prime is 7115780471. The next prime is 7115780557. The reversal of 7115780537 is 7350875117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5595638416 + 1520142121 = 74804^2 + 38989^2 .

It is a cyclic number.

It is not a de Polignac number, because 7115780537 - 2⁸ = 7115780281 is a prime.

It is not a weakly prime, because it can be changed into another prime (7115780557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3557890268 + 3557890269.

It is an arithmetic number, because the mean of its divisors is an integer number (3557890269).

Almost surely, 2^7115780537 is an apocalyptic number.

It is an amenable number.

7115780537 is a deficient number, since it is larger than the sum of its proper divisors (1).

7115780537 is an equidigital number, since it uses as much as digits as its factorization.

7115780537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 205800, while the sum is 44.

The square root of 7115780537 is about 84355.0860173825. The cubic root of 7115780537 is about 1923.4202398254.

The spelling of 7115780537 in words is "seven billion, one hundred fifteen million, seven hundred eighty thousand, five hundred thirty-seven".