11747491061 has 2 divisors, whose sum is σ = 11747491062. Its totient is φ = 11747491060.

The previous prime is 11747491051. The next prime is 11747491069. The reversal of 11747491061 is 16019474711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8173244836 + 3574246225 = 90406^2 + 59785^2 .

It is a cyclic number.

It is not a de Polignac number, because 11747491061 - 2¹⁴ = 11747474677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11747491069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5873745530 + 5873745531.

It is an arithmetic number, because the mean of its divisors is an integer number (5873745531).

Almost surely, 2^11747491061 is an apocalyptic number.

It is an amenable number.

11747491061 is a deficient number, since it is larger than the sum of its proper divisors (1).

11747491061 is an equidigital number, since it uses as much as digits as its factorization.

11747491061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 41.

The spelling of 11747491061 in words is "eleven billion, seven hundred forty-seven million, four hundred ninety-one thousand, sixty-one".