263415672602242 has 4 divisors (see below), whose sum is σ = 395123508903366. Its totient is φ = 131707836301120.

The previous prime is 263415672602179. The next prime is 263415672602261. The reversal of 263415672602242 is 242206276514362.

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., 260426684583081 + 2988988019161 = 16137741^2 + 1728869^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 263415672602242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65853918150559 + ... + 65853918150562.

Almost surely, 2^{263415672602242} is an apocalyptic number.

263415672602242 is a deficient number, since it is larger than the sum of its proper divisors (131707836301124).

263415672602242 is a wasteful number, since it uses less digits than its factorization.

263415672602242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131707836301123.

The product of its (nonzero) digits is 11612160, while the sum is 52.

The spelling of 263415672602242 in words is "two hundred sixty-three trillion, four hundred fifteen billion, six hundred seventy-two million, six hundred two thousand, two hundred forty-two".