1131911433557 has 2 divisors, whose sum is σ = 1131911433558. Its totient is φ = 1131911433556.

The previous prime is 1131911433473. The next prime is 1131911433571. The reversal of 1131911433557 is 7553341191311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1098316576036 + 33594857521 = 1048006^2 + 183289^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131911433557 - 2¹⁴ = 1131911417173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131911433157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565955716778 + 565955716779.

It is an arithmetic number, because the mean of its divisors is an integer number (565955716779).

Almost surely, 2^{1131911433557} is an apocalyptic number.

It is an amenable number.

1131911433557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131911433557 is an equidigital number, since it uses as much as digits as its factorization.

1131911433557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 170100, while the sum is 44.

The spelling of 1131911433557 in words is "one trillion, one hundred thirty-one billion, nine hundred eleven million, four hundred thirty-three thousand, five hundred fifty-seven".