11601011335621 has 2 divisors, whose sum is σ = 11601011335622. Its totient is φ = 11601011335620.

The previous prime is 11601011335561. The next prime is 11601011335637. The reversal of 11601011335621 is 12653311010611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7459945064100 + 4141066271521 = 2731290^2 + 2034961^2 .

It is a cyclic number.

It is not a de Polignac number, because 11601011335621 - 2²³ = 11601002947013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11601011335321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5800505667810 + 5800505667811.

It is an arithmetic number, because the mean of its divisors is an integer number (5800505667811).

Almost surely, 2^{11601011335621} is an apocalyptic number.

It is an amenable number.

11601011335621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11601011335621 is an equidigital number, since it uses as much as digits as its factorization.

11601011335621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 31.

The spelling of 11601011335621 in words is "eleven trillion, six hundred one billion, eleven million, three hundred thirty-five thousand, six hundred twenty-one".