70227450521 has 2 divisors, whose sum is σ = 70227450522. Its totient is φ = 70227450520.

The previous prime is 70227450497. The next prime is 70227450563. The reversal of 70227450521 is 12505472207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59851176025 + 10376274496 = 244645^2 + 101864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70227450521 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (70227453521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35113725260 + 35113725261.

It is an arithmetic number, because the mean of its divisors is an integer number (35113725261).

Almost surely, 2^70227450521 is an apocalyptic number.

It is an amenable number.

70227450521 is a deficient number, since it is larger than the sum of its proper divisors (1).

70227450521 is an equidigital number, since it uses as much as digits as its factorization.

70227450521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39200, while the sum is 35.

The spelling of 70227450521 in words is "seventy billion, two hundred twenty-seven million, four hundred fifty thousand, five hundred twenty-one".