11215632516401 has 2 divisors, whose sum is σ = 11215632516402. Its totient is φ = 11215632516400.

The previous prime is 11215632516397. The next prime is 11215632516437. The reversal of 11215632516401 is 10461523651211.

11215632516401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10153240552225 + 1062391964176 = 3186415^2 + 1030724^2 .

It is a cyclic number.

It is not a de Polignac number, because 11215632516401 - 2² = 11215632516397 is a prime.

It is not a weakly prime, because it can be changed into another prime (11215632516461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5607816258200 + 5607816258201.

It is an arithmetic number, because the mean of its divisors is an integer number (5607816258201).

Almost surely, 2^{11215632516401} is an apocalyptic number.

It is an amenable number.

11215632516401 is a deficient number, since it is larger than the sum of its proper divisors (1).

11215632516401 is an equidigital number, since it uses as much as digits as its factorization.

11215632516401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 11215632516401 in words is "eleven trillion, two hundred fifteen billion, six hundred thirty-two million, five hundred sixteen thousand, four hundred one".