11988905002 has 8 divisors (see below), whose sum is σ = 19041202116. Its totient is φ = 5641837632.

The previous prime is 11988904999. The next prime is 11988905003. The reversal of 11988905002 is 20050988911.

It can be written as a sum of positive squares in 2 ways, for example, as 11442794841 + 546110161 = 106971^2 + 23369^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 11988905002.

It is not an unprimeable number, because it can be changed into a prime (11988905003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176307393 + ... + 176307460.

Almost surely, 2^11988905002 is an apocalyptic number.

11988905002 is a deficient number, since it is larger than the sum of its proper divisors (7052297114).

11988905002 is a wasteful number, since it uses less digits than its factorization.

11988905002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352614872.

The product of its (nonzero) digits is 51840, while the sum is 43.

The spelling of 11988905002 in words is "eleven billion, nine hundred eighty-eight million, nine hundred five thousand, two".