71276955857 has 2 divisors, whose sum is σ = 71276955858. Its totient is φ = 71276955856.

The previous prime is 71276955847. The next prime is 71276955947. The reversal of 71276955857 is 75855967217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71241481921 + 35473936 = 266911^2 + 5956^2 .

It is a cyclic number.

It is not a de Polignac number, because 71276955857 - 2⁸ = 71276955601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71276955857.

It is not a weakly prime, because it can be changed into another prime (71276955847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35638477928 + 35638477929.

It is an arithmetic number, because the mean of its divisors is an integer number (35638477929).

Almost surely, 2^71276955857 is an apocalyptic number.

It is an amenable number.

71276955857 is a deficient number, since it is larger than the sum of its proper divisors (1).

71276955857 is an equidigital number, since it uses as much as digits as its factorization.

71276955857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37044000, while the sum is 62.

The spelling of 71276955857 in words is "seventy-one billion, two hundred seventy-six million, nine hundred fifty-five thousand, eight hundred fifty-seven".