11802432321 has 15 divisors (see below), whose sum is σ = 17632254673. Its totient is φ = 7867636380.

The previous prime is 11802432319. The next prime is 11802432377. The reversal of 11802432321 is 12323420811.

The square root of 11802432321 is 108639.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 11802432321 - 2¹ = 11802432319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11802432391) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 971716 + ... + 983786.

Almost surely, 2^11802432321 is an apocalyptic number.

11802432321 is the 108639-th square number.

11802432321 is the 54320-th centered octagonal number.

It is an amenable number.

11802432321 is a deficient number, since it is larger than the sum of its proper divisors (5829822352).

11802432321 is an frugal number, since it uses more digits than its factorization.

11802432321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24154 (or 12074 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Multiplying 11802432321 by its product of nonzero digits (2304), we get a square (27192804067584 = 5214672²).

The spelling of 11802432321 in words is "eleven billion, eight hundred two million, four hundred thirty-two thousand, three hundred twenty-one".