70044842921 has 2 divisors, whose sum is σ = 70044842922. Its totient is φ = 70044842920.

The previous prime is 70044842851. The next prime is 70044842927. The reversal of 70044842921 is 12924844007.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63857290000 + 6187552921 = 252700^2 + 78661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70044842921 is a prime.

It is not a weakly prime, because it can be changed into another prime (70044842927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35022421460 + 35022421461.

It is an arithmetic number, because the mean of its divisors is an integer number (35022421461).

Almost surely, 2^70044842921 is an apocalyptic number.

It is an amenable number.

70044842921 is a deficient number, since it is larger than the sum of its proper divisors (1).

70044842921 is an equidigital number, since it uses as much as digits as its factorization.

70044842921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 70044842921 in words is "seventy billion, forty-four million, eight hundred forty-two thousand, nine hundred twenty-one".