70190075621 has 2 divisors, whose sum is σ = 70190075622. Its totient is φ = 70190075620.

The previous prime is 70190075611. The next prime is 70190075699. The reversal of 70190075621 is 12657009107.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68887876225 + 1302199396 = 262465^2 + 36086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70190075621 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70190075611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35095037810 + 35095037811.

It is an arithmetic number, because the mean of its divisors is an integer number (35095037811).

Almost surely, 2^70190075621 is an apocalyptic number.

It is an amenable number.

70190075621 is a deficient number, since it is larger than the sum of its proper divisors (1).

70190075621 is an equidigital number, since it uses as much as digits as its factorization.

70190075621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 38.

The spelling of 70190075621 in words is "seventy billion, one hundred ninety million, seventy-five thousand, six hundred twenty-one".