1361253667663 has 6 divisors (see below), whose sum is σ = 1436669383704. Its totient is φ = 1289608737444.

The previous prime is 1361253667643. The next prime is 1361253667687. The reversal of 1361253667663 is 3667663521631.

It is not a de Polignac number, because 1361253667663 - 2³⁷ = 1223814714191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361253667643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1885392531 + ... + 1885393252.

It is an arithmetic number, because the mean of its divisors is an integer number (239444897284).

Almost surely, 2^{1361253667663} is an apocalyptic number.

1361253667663 is a deficient number, since it is larger than the sum of its proper divisors (75415716041).

1361253667663 is an equidigital number, since it uses as much as digits as its factorization.

1361253667663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770785821 (or 3770785802 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 55.

The spelling of 1361253667663 in words is "one trillion, three hundred sixty-one billion, two hundred fifty-three million, six hundred sixty-seven thousand, six hundred sixty-three".