1133468487581 has 2 divisors, whose sum is σ = 1133468487582. Its totient is φ = 1133468487580.

The previous prime is 1133468487577. The next prime is 1133468487583. The reversal of 1133468487581 is 1857848643311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 889797910681 + 243670576900 = 943291^2 + 493630^2 .

It is a cyclic number.

It is not a de Polignac number, because 1133468487581 - 2² = 1133468487577 is a prime.

It is a super-2 number, since 2×1133468487581² (a number of 25 digits) contains 22 as substring.

Together with 1133468487583, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1133468487581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1133468487583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 566734243790 + 566734243791.

It is an arithmetic number, because the mean of its divisors is an integer number (566734243791).

Almost surely, 2^{1133468487581} is an apocalyptic number.

It is an amenable number.

1133468487581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1133468487581 is an equidigital number, since it uses as much as digits as its factorization.

1133468487581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15482880, while the sum is 59.

The spelling of 1133468487581 in words is "one trillion, one hundred thirty-three billion, four hundred sixty-eight million, four hundred eighty-seven thousand, five hundred eighty-one".