78571508723 has 2 divisors, whose sum is σ = 78571508724. Its totient is φ = 78571508722.

The previous prime is 78571508713. The next prime is 78571508731. The reversal of 78571508723 is 32780517587.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78571508723 - 2⁸ = 78571508467 is a prime.

It is not a weakly prime, because it can be changed into another prime (78571508713) 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, 39285754361 + 39285754362.

It is an arithmetic number, because the mean of its divisors is an integer number (39285754362).

Almost surely, 2^78571508723 is an apocalyptic number.

78571508723 is a deficient number, since it is larger than the sum of its proper divisors (1).

78571508723 is an equidigital number, since it uses as much as digits as its factorization.

78571508723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3292800, while the sum is 53.

The spelling of 78571508723 in words is "seventy-eight billion, five hundred seventy-one million, five hundred eight thousand, seven hundred twenty-three".