70673707081 has 2 divisors, whose sum is σ = 70673707082. Its totient is φ = 70673707080.

The previous prime is 70673707037. The next prime is 70673707087. The reversal of 70673707081 is 18070737607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52815393856 + 17858313225 = 229816^2 + 133635^2 .

It is a cyclic number.

It is not a de Polignac number, because 70673707081 - 2¹¹ = 70673705033 is a prime.

It is a super-2 number, since 2×70673707081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70673707087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35336853540 + 35336853541.

It is an arithmetic number, because the mean of its divisors is an integer number (35336853541).

Almost surely, 2^70673707081 is an apocalyptic number.

It is an amenable number.

70673707081 is a deficient number, since it is larger than the sum of its proper divisors (1).

70673707081 is an equidigital number, since it uses as much as digits as its factorization.

70673707081 is an evil number, because the sum of its binary digits is even.

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

The spelling of 70673707081 in words is "seventy billion, six hundred seventy-three million, seven hundred seven thousand, eighty-one".