11656051061 has 2 divisors, whose sum is σ = 11656051062. Its totient is φ = 11656051060.

The previous prime is 11656050977. The next prime is 11656051073. The reversal of 11656051061 is 16015065611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11575608100 + 80442961 = 107590^2 + 8969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11656051061 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11656051261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5828025530 + 5828025531.

It is an arithmetic number, because the mean of its divisors is an integer number (5828025531).

Almost surely, 2^11656051061 is an apocalyptic number.

It is an amenable number.

11656051061 is a deficient number, since it is larger than the sum of its proper divisors (1).

11656051061 is an equidigital number, since it uses as much as digits as its factorization.

11656051061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 11656051061 in words is "eleven billion, six hundred fifty-six million, fifty-one thousand, sixty-one".