1081761767237 has 2 divisors, whose sum is σ = 1081761767238. Its totient is φ = 1081761767236.

The previous prime is 1081761767197. The next prime is 1081761767279. The reversal of 1081761767237 is 7327671671801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1071154621156 + 10607146081 = 1034966^2 + 102991^2 .

It is a cyclic number.

It is not a de Polignac number, because 1081761767237 - 2⁶ = 1081761767173 is a prime.

It is a super-2 number, since 2×1081761767237² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1081761767287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540880883618 + 540880883619.

It is an arithmetic number, because the mean of its divisors is an integer number (540880883619).

Almost surely, 2^{1081761767237} is an apocalyptic number.

It is an amenable number.

1081761767237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081761767237 is an equidigital number, since it uses as much as digits as its factorization.

1081761767237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4148928, while the sum is 56.

The spelling of 1081761767237 in words is "one trillion, eighty-one billion, seven hundred sixty-one million, seven hundred sixty-seven thousand, two hundred thirty-seven".