263198432842 has 4 divisors (see below), whose sum is σ = 394797649266. Its totient is φ = 131599216420.

The previous prime is 263198432821. The next prime is 263198432891. The reversal of 263198432842 is 248234891362.

263198432842 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 222632041921 + 40566390921 = 471839^2 + 201411^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 263198432842.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65799608209 + ... + 65799608212.

Almost surely, 2^263198432842 is an apocalyptic number.

263198432842 is a deficient number, since it is larger than the sum of its proper divisors (131599216424).

263198432842 is a wasteful number, since it uses less digits than its factorization.

263198432842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131599216423.

The product of its digits is 3981312, while the sum is 52.

The spelling of 263198432842 in words is "two hundred sixty-three billion, one hundred ninety-eight million, four hundred thirty-two thousand, eight hundred forty-two".