11611218701 has 2 divisors, whose sum is σ = 11611218702. Its totient is φ = 11611218700.

The previous prime is 11611218691. The next prime is 11611218721. The reversal of 11611218701 is 10781211611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11077562500 + 533656201 = 105250^2 + 23101^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11611218701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11611218721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5805609350 + 5805609351.

It is an arithmetic number, because the mean of its divisors is an integer number (5805609351).

Almost surely, 2^11611218701 is an apocalyptic number.

It is an amenable number.

11611218701 is a deficient number, since it is larger than the sum of its proper divisors (1).

11611218701 is an equidigital number, since it uses as much as digits as its factorization.

11611218701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 29.

The spelling of 11611218701 in words is "eleven billion, six hundred eleven million, two hundred eighteen thousand, seven hundred one".