11997025402 has 8 divisors (see below), whose sum is σ = 18052307316. Its totient is φ = 5979589632.

The previous prime is 11997025393. The next prime is 11997025421. The reversal of 11997025402 is 20452079911.

It is a happy number.

11997025402 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8742437001 + 3254588401 = 93501^2 + 57049^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9460743 + ... + 9462010.

Almost surely, 2^11997025402 is an apocalyptic number.

11997025402 is a deficient number, since it is larger than the sum of its proper divisors (6055281914).

11997025402 is a wasteful number, since it uses less digits than its factorization.

11997025402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18923072.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 11997025402 in words is "eleven billion, nine hundred ninety-seven million, twenty-five thousand, four hundred two".