434467878138557 has 4 divisors (see below), whose sum is σ = 434478598105020. Its totient is φ = 434457158172096.

The previous prime is 434467878138467. The next prime is 434467878138577. The reversal of 434467878138557 is 755831878764434.

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 420250861000441 + 14217017138116 = 20500021^2 + 3770546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434467878138557 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 (434467878138577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5359922438 + ... + 5360003495.

It is an arithmetic number, because the mean of its divisors is an integer number (108619649526255).

Almost surely, 2^{434467878138557} is an apocalyptic number.

It is an amenable number.

434467878138557 is a deficient number, since it is larger than the sum of its proper divisors (10719966463).

434467878138557 is a wasteful number, since it uses less digits than its factorization.

434467878138557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10719966462.

The product of its digits is 15173222400, while the sum is 80.

The spelling of 434467878138557 in words is "four hundred thirty-four trillion, four hundred sixty-seven billion, eight hundred seventy-eight million, one hundred thirty-eight thousand, five hundred fifty-seven".