418113317978 has 4 divisors (see below), whose sum is σ = 627169976970. Its totient is φ = 209056658988.

The previous prime is 418113317971. The next prime is 418113317983. The reversal of 418113317978 is 879713311814.

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., 404143732729 + 13969585249 = 635723^2 + 118193^2 .

It is not an unprimeable number, because it can be changed into a prime (418113317971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104528329493 + ... + 104528329496.

Almost surely, 2^418113317978 is an apocalyptic number.

418113317978 is a deficient number, since it is larger than the sum of its proper divisors (209056658992).

418113317978 is a wasteful number, since it uses less digits than its factorization.

418113317978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209056658991.

The product of its digits is 1016064, while the sum is 53.

The spelling of 418113317978 in words is "four hundred eighteen billion, one hundred thirteen million, three hundred seventeen thousand, nine hundred seventy-eight".