11554504616641 has 32 divisors (see below), whose sum is σ = 13595808441600. Its totient is φ = 9615294120960.

The previous prime is 11554504616623. The next prime is 11554504616647. The reversal of 11554504616641 is 14661640545511.

It is a cyclic number.

It is not a de Polignac number, because 11554504616641 - 2¹⁵ = 11554504583873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11554504616647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31169461 + ... + 31537981.

It is an arithmetic number, because the mean of its divisors is an integer number (424869013800).

Almost surely, 2^{11554504616641} is an apocalyptic number.

It is an amenable number.

11554504616641 is a deficient number, since it is larger than the sum of its proper divisors (2041303824959).

11554504616641 is an equidigital number, since it uses as much as digits as its factorization.

11554504616641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369529.

The product of its (nonzero) digits is 1728000, while the sum is 49.

The spelling of 11554504616641 in words is "eleven trillion, five hundred fifty-four billion, five hundred four million, six hundred sixteen thousand, six hundred forty-one".