523311458242642 has 4 divisors (see below), whose sum is σ = 784967187363966. Its totient is φ = 261655729121320.

The previous prime is 523311458242627. The next prime is 523311458242663. The reversal of 523311458242642 is 246242854113325.

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

It can be written as a sum of positive squares in only one way, i.e., 514965940365321 + 8345517877321 = 22692861^2 + 2888861^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 523311458242642.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130827864560659 + ... + 130827864560662.

Almost surely, 2^{523311458242642} is an apocalyptic number.

523311458242642 is a deficient number, since it is larger than the sum of its proper divisors (261655729121324).

523311458242642 is a wasteful number, since it uses less digits than its factorization.

523311458242642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261655729121323.

The product of its digits is 11059200, while the sum is 52.

The spelling of 523311458242642 in words is "five hundred twenty-three trillion, three hundred eleven billion, four hundred fifty-eight million, two hundred forty-two thousand, six hundred forty-two".