70667371121 has 2 divisors, whose sum is σ = 70667371122. Its totient is φ = 70667371120.

The previous prime is 70667371079. The next prime is 70667371123. The reversal of 70667371121 is 12117376607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40056019600 + 30611351521 = 200140^2 + 174961^2 .

It is a cyclic number.

It is not a de Polignac number, because 70667371121 - 2⁶ = 70667371057 is a prime.

Together with 70667371123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70667371123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35333685560 + 35333685561.

It is an arithmetic number, because the mean of its divisors is an integer number (35333685561).

Almost surely, 2^70667371121 is an apocalyptic number.

It is an amenable number.

70667371121 is a deficient number, since it is larger than the sum of its proper divisors (1).

70667371121 is an equidigital number, since it uses as much as digits as its factorization.

70667371121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74088, while the sum is 41.

The spelling of 70667371121 in words is "seventy billion, six hundred sixty-seven million, three hundred seventy-one thousand, one hundred twenty-one".