70834505220421 has 4 divisors (see below), whose sum is σ = 70834566780844. Its totient is φ = 70834443660000.

The previous prime is 70834505220379. The next prime is 70834505220487. The reversal of 70834505220421 is 12402250543807.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32936568643521 + 37897936576900 = 5739039^2 + 6156130^2 .

It is a cyclic number.

It is not a de Polignac number, because 70834505220421 - 2²⁵ = 70834471665989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70834505220821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29020710 + ... + 31366711.

It is an arithmetic number, because the mean of its divisors is an integer number (17708641695211).

Almost surely, 2^{70834505220421} is an apocalyptic number.

It is an amenable number.

70834505220421 is a deficient number, since it is larger than the sum of its proper divisors (61560423).

70834505220421 is a wasteful number, since it uses less digits than its factorization.

70834505220421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61560422.

The product of its (nonzero) digits is 537600, while the sum is 43.

The spelling of 70834505220421 in words is "seventy trillion, eight hundred thirty-four billion, five hundred five million, two hundred twenty thousand, four hundred twenty-one".