11603382961 has 3 divisors (see below), whose sum is σ = 11603490681. Its totient is φ = 11603275242.

The previous prime is 11603382941. The next prime is 11603382977. The reversal of 11603382961 is 16928330611.

The square root of 11603382961 is 107719.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 11603382961 - 2¹¹ = 11603380913 is a prime.

It is a super-2 number, since 2×11603382961² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11603382911) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 53860 + ... + 161578.

It is an arithmetic number, because the mean of its divisors is an integer number (3867830227).

Almost surely, 2^11603382961 is an apocalyptic number.

11603382961 is the 107719-th square number.

11603382961 is the 53860-th centered octagonal number.

It is an amenable number.

11603382961 is a deficient number, since it is larger than the sum of its proper divisors (107720).

11603382961 is an frugal number, since it uses more digits than its factorization.

11603382961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215438 (or 107719 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

Multiplying 11603382961 by its product of nonzero digits (46656), we get a square (541367435428416 = 23267304²).

The spelling of 11603382961 in words is "eleven billion, six hundred three million, three hundred eighty-two thousand, nine hundred sixty-one".