426511616018 has 4 divisors (see below), whose sum is σ = 639767424030. Its totient is φ = 213255808008.

The previous prime is 426511615931. The next prime is 426511616023. The reversal of 426511616018 is 810616115624.

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., 328722195649 + 97789420369 = 573343^2 + 312713^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106627904003 + ... + 106627904006.

Almost surely, 2^426511616018 is an apocalyptic number.

426511616018 is a deficient number, since it is larger than the sum of its proper divisors (213255808012).

426511616018 is a wasteful number, since it uses less digits than its factorization.

426511616018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213255808011.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 426511616018 in words is "four hundred twenty-six billion, five hundred eleven million, six hundred sixteen thousand, eighteen".