1365553727957 has 2 divisors, whose sum is σ = 1365553727958. Its totient is φ = 1365553727956.

The previous prime is 1365553727947. The next prime is 1365553728001. The reversal of 1365553727957 is 7597273555631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 814026190756 + 551527537201 = 902234^2 + 742649^2 .

It is a cyclic number.

It is not a de Polignac number, because 1365553727957 - 2²⁶ = 1365486619093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1365553727893 and 1365553727902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1365553727917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682776863978 + 682776863979.

It is an arithmetic number, because the mean of its divisors is an integer number (682776863979).

Almost surely, 2^{1365553727957} is an apocalyptic number.

It is an amenable number.

1365553727957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1365553727957 is an equidigital number, since it uses as much as digits as its factorization.

1365553727957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 208372500, while the sum is 65.

The spelling of 1365553727957 in words is "one trillion, three hundred sixty-five billion, five hundred fifty-three million, seven hundred twenty-seven thousand, nine hundred fifty-seven".