11321990452 has 12 divisors (see below), whose sum is σ = 19819075360. Its totient is φ = 5659397496.

The previous prime is 11321990443. The next prime is 11321990453. The reversal of 11321990452 is 25409912311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321990453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383418 + ... + 411889.

Almost surely, 2^11321990452 is an apocalyptic number.

It is an amenable number.

11321990452 is a deficient number, since it is larger than the sum of its proper divisors (8497084908).

11321990452 is a wasteful number, since it uses less digits than its factorization.

11321990452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798870 (or 798868 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The spelling of 11321990452 in words is "eleven billion, three hundred twenty-one million, nine hundred ninety thousand, four hundred fifty-two".