11602681261 has 2 divisors, whose sum is σ = 11602681262. Its totient is φ = 11602681260.

The previous prime is 11602681243. The next prime is 11602681309. The reversal of 11602681261 is 16218620611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7756324900 + 3846356361 = 88070^2 + 62019^2 .

It is a cyclic number.

It is not a de Polignac number, because 11602681261 - 2²¹ = 11600584109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11602681231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5801340630 + 5801340631.

It is an arithmetic number, because the mean of its divisors is an integer number (5801340631).

Almost surely, 2^11602681261 is an apocalyptic number.

It is an amenable number.

11602681261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11602681261 is an equidigital number, since it uses as much as digits as its factorization.

11602681261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 11602681261 in words is "eleven billion, six hundred two million, six hundred eighty-one thousand, two hundred sixty-one".