70411521709 has 2 divisors, whose sum is σ = 70411521710. Its totient is φ = 70411521708.

The previous prime is 70411521647. The next prime is 70411521727. The reversal of 70411521709 is 90712511407.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45006349609 + 25405172100 = 212147^2 + 159390^2 .

It is a cyclic number.

It is not a de Polignac number, because 70411521709 - 2⁹ = 70411521197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70411521779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35205760854 + 35205760855.

It is an arithmetic number, because the mean of its divisors is an integer number (35205760855).

Almost surely, 2^70411521709 is an apocalyptic number.

It is an amenable number.

70411521709 is a deficient number, since it is larger than the sum of its proper divisors (1).

70411521709 is an equidigital number, since it uses as much as digits as its factorization.

70411521709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 37.

The spelling of 70411521709 in words is "seventy billion, four hundred eleven million, five hundred twenty-one thousand, seven hundred nine".