1087137180991 has 2 divisors, whose sum is σ = 1087137180992. Its totient is φ = 1087137180990.

The previous prime is 1087137180949. The next prime is 1087137181003. The reversal of 1087137180991 is 1990817317801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1087137180991 - 2¹¹ = 1087137178943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1087137180931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543568590495 + 543568590496.

It is an arithmetic number, because the mean of its divisors is an integer number (543568590496).

Almost surely, 2^{1087137180991} is an apocalyptic number.

1087137180991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087137180991 is an equidigital number, since it uses as much as digits as its factorization.

1087137180991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 55.

The spelling of 1087137180991 in words is "one trillion, eighty-seven billion, one hundred thirty-seven million, one hundred eighty thousand, nine hundred ninety-one".