1365641263997 has 2 divisors, whose sum is σ = 1365641263998. Its totient is φ = 1365641263996.

The previous prime is 1365641263991. The next prime is 1365641264063. The reversal of 1365641263997 is 7993621465631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 715455455716 + 650185808281 = 845846^2 + 806341^2 .

It is a cyclic number.

It is not a de Polignac number, because 1365641263997 - 2¹² = 1365641259901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1365641263991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682820631998 + 682820631999.

It is an arithmetic number, because the mean of its divisors is an integer number (682820631999).

Almost surely, 2^{1365641263997} is an apocalyptic number.

It is an amenable number.

1365641263997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1365641263997 is an equidigital number, since it uses as much as digits as its factorization.

1365641263997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44089920, while the sum is 62.

The spelling of 1365641263997 in words is "one trillion, three hundred sixty-five billion, six hundred forty-one million, two hundred sixty-three thousand, nine hundred ninety-seven".