78006507511 has 2 divisors, whose sum is σ = 78006507512. Its totient is φ = 78006507510.

The previous prime is 78006507487. The next prime is 78006507533. The reversal of 78006507511 is 11570560087.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78006507511 - 2¹¹ = 78006505463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78006507311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39003253755 + 39003253756.

It is an arithmetic number, because the mean of its divisors is an integer number (39003253756).

Almost surely, 2^78006507511 is an apocalyptic number.

78006507511 is a deficient number, since it is larger than the sum of its proper divisors (1).

78006507511 is an equidigital number, since it uses as much as digits as its factorization.

78006507511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58800, while the sum is 40.

The spelling of 78006507511 in words is "seventy-eight billion, six million, five hundred seven thousand, five hundred eleven".