11711480621 has 2 divisors, whose sum is σ = 11711480622. Its totient is φ = 11711480620.

The previous prime is 11711480617. The next prime is 11711480687. The reversal of 11711480621 is 12608411711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9074658121 + 2636822500 = 95261^2 + 51350^2 .

It is a cyclic number.

It is not a de Polignac number, because 11711480621 - 2² = 11711480617 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11711380621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5855740310 + 5855740311.

It is an arithmetic number, because the mean of its divisors is an integer number (5855740311).

Almost surely, 2^11711480621 is an apocalyptic number.

It is an amenable number.

11711480621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11711480621 is an equidigital number, since it uses as much as digits as its factorization.

11711480621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 32.

The spelling of 11711480621 in words is "eleven billion, seven hundred eleven million, four hundred eighty thousand, six hundred twenty-one".