523426513627438 has 4 divisors (see below), whose sum is σ = 785139770441160. Its totient is φ = 261713256813718.

The previous prime is 523426513627429. The next prime is 523426513627477. The reversal of 523426513627438 is 834726315624325.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130856628406858 + ... + 130856628406861.

It is an arithmetic number, because the mean of its divisors is an integer number (196284942610290).

Almost surely, 2^{523426513627438} is an apocalyptic number.

523426513627438 is a deficient number, since it is larger than the sum of its proper divisors (261713256813722).

523426513627438 is a wasteful number, since it uses less digits than its factorization.

523426513627438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261713256813721.

The product of its digits is 174182400, while the sum is 61.

The spelling of 523426513627438 in words is "five hundred twenty-three trillion, four hundred twenty-six billion, five hundred thirteen million, six hundred twenty-seven thousand, four hundred thirty-eight".