70744404421 has 2 divisors, whose sum is σ = 70744404422. Its totient is φ = 70744404420.

The previous prime is 70744404383. The next prime is 70744404427. The reversal of 70744404421 is 12440444707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43491017025 + 27253387396 = 208545^2 + 165086^2 .

It is a cyclic number.

It is not a de Polignac number, because 70744404421 - 2¹⁵ = 70744371653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70744404427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35372202210 + 35372202211.

It is an arithmetic number, because the mean of its divisors is an integer number (35372202211).

Almost surely, 2^70744404421 is an apocalyptic number.

It is an amenable number.

70744404421 is a deficient number, since it is larger than the sum of its proper divisors (1).

70744404421 is an equidigital number, since it uses as much as digits as its factorization.

70744404421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100352, while the sum is 37.

The spelling of 70744404421 in words is "seventy billion, seven hundred forty-four million, four hundred four thousand, four hundred twenty-one".