71787060073 has 2 divisors, whose sum is σ = 71787060074. Its totient is φ = 71787060072.

The previous prime is 71787060031. The next prime is 71787060089. The reversal of 71787060073 is 37006078717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58848452569 + 12938607504 = 242587^2 + 113748^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71787060073 is a prime.

It is not a weakly prime, because it can be changed into another prime (71787066073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35893530036 + 35893530037.

It is an arithmetic number, because the mean of its divisors is an integer number (35893530037).

Almost surely, 2^71787060073 is an apocalyptic number.

It is an amenable number.

71787060073 is a deficient number, since it is larger than the sum of its proper divisors (1).

71787060073 is an equidigital number, since it uses as much as digits as its factorization.

71787060073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345744, while the sum is 46.

The spelling of 71787060073 in words is "seventy-one billion, seven hundred eighty-seven million, sixty thousand, seventy-three".