705404420053 has 6 divisors (see below), whose sum is σ = 705743193302. Its totient is φ = 705065809320.

The previous prime is 705404420051. The next prime is 705404420057. The reversal of 705404420053 is 350024404507.

It can be written as a sum of positive squares in only one way, i.e., 688274322129 + 17130097924 = 829623^2 + 130882^2 .

It is not a de Polignac number, because 705404420053 - 2¹ = 705404420051 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 (705404420051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4377175 + ... + 4535467.

Almost surely, 2^705404420053 is an apocalyptic number.

It is an amenable number.

705404420053 is a deficient number, since it is larger than the sum of its proper divisors (338773249).

705404420053 is an frugal number, since it uses more digits than its factorization.

705404420053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162515 (or 160404 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 34.

The spelling of 705404420053 in words is "seven hundred five billion, four hundred four million, four hundred twenty thousand, fifty-three".