70699991573 has 2 divisors, whose sum is σ = 70699991574. Its totient is φ = 70699991572.

The previous prime is 70699991539. The next prime is 70699991657. The reversal of 70699991573 is 37519999607.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67370355364 + 3329636209 = 259558^2 + 57703^2 .

It is a cyclic number.

It is not a de Polignac number, because 70699991573 - 2¹⁰ = 70699990549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70699991773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35349995786 + 35349995787.

It is an arithmetic number, because the mean of its divisors is an integer number (35349995787).

Almost surely, 2^70699991573 is an apocalyptic number.

It is an amenable number.

70699991573 is a deficient number, since it is larger than the sum of its proper divisors (1).

70699991573 is an equidigital number, since it uses as much as digits as its factorization.

70699991573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28934010, while the sum is 65.

The spelling of 70699991573 in words is "seventy billion, six hundred ninety-nine million, nine hundred ninety-one thousand, five hundred seventy-three".