70164376021 has 2 divisors, whose sum is σ = 70164376022. Its totient is φ = 70164376020.

The previous prime is 70164375991. The next prime is 70164376027. The reversal of 70164376021 is 12067346107.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57729672900 + 12434703121 = 240270^2 + 111511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70164376021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70164376027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35082188010 + 35082188011.

It is an arithmetic number, because the mean of its divisors is an integer number (35082188011).

Almost surely, 2^70164376021 is an apocalyptic number.

It is an amenable number.

70164376021 is a deficient number, since it is larger than the sum of its proper divisors (1).

70164376021 is an equidigital number, since it uses as much as digits as its factorization.

70164376021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 70164376021 in words is "seventy billion, one hundred sixty-four million, three hundred seventy-six thousand, twenty-one".