11951707018 has 8 divisors (see below), whose sum is σ = 18265816548. Its totient is φ = 5863101504.

The previous prime is 11951707007. The next prime is 11951707057. The reversal of 11951707018 is 81070715911.

It can be written as a sum of positive squares in 2 ways, for example, as 11780280369 + 171426649 = 108537^2 + 13093^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11951707018² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56375871 + ... + 56376082.

Almost surely, 2^11951707018 is an apocalyptic number.

11951707018 is a deficient number, since it is larger than the sum of its proper divisors (6314109530).

11951707018 is a wasteful number, since it uses less digits than its factorization.

11951707018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112752008.

The product of its (nonzero) digits is 17640, while the sum is 40.

The spelling of 11951707018 in words is "eleven billion, nine hundred fifty-one million, seven hundred seven thousand, eighteen".