1359309687881 has 2 divisors, whose sum is σ = 1359309687882. Its totient is φ = 1359309687880.

The previous prime is 1359309687877. The next prime is 1359309687893. The reversal of 1359309687881 is 1887869039531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 708155910400 + 651153777481 = 841520^2 + 806941^2 .

It is a cyclic number.

It is not a de Polignac number, because 1359309687881 - 2² = 1359309687877 is a prime.

It is a super-2 number, since 2×1359309687881² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1359309687821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 679654843940 + 679654843941.

It is an arithmetic number, because the mean of its divisors is an integer number (679654843941).

Almost surely, 2^{1359309687881} is an apocalyptic number.

It is an amenable number.

1359309687881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1359309687881 is an equidigital number, since it uses as much as digits as its factorization.

1359309687881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78382080, while the sum is 68.

The spelling of 1359309687881 in words is "one trillion, three hundred fifty-nine billion, three hundred nine million, six hundred eighty-seven thousand, eight hundred eighty-one".