76281321317 has 2 divisors, whose sum is σ = 76281321318. Its totient is φ = 76281321316.

The previous prime is 76281321269. The next prime is 76281321329. The reversal of 76281321317 is 71312318267.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67085662081 + 9195659236 = 259009^2 + 95894^2 .

It is a cyclic number.

It is not a de Polignac number, because 76281321317 - 2¹⁴ = 76281304933 is a prime.

It is a super-2 number, since 2×76281321317² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76281321917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38140660658 + 38140660659.

It is an arithmetic number, because the mean of its divisors is an integer number (38140660659).

Almost surely, 2^76281321317 is an apocalyptic number.

It is an amenable number.

76281321317 is a deficient number, since it is larger than the sum of its proper divisors (1).

76281321317 is an equidigital number, since it uses as much as digits as its factorization.

76281321317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 41.

The spelling of 76281321317 in words is "seventy-six billion, two hundred eighty-one million, three hundred twenty-one thousand, three hundred seventeen".