1361253667649 has 8 divisors (see below), whose sum is σ = 1362384766080. Its totient is φ = 1360123043776.

The previous prime is 1361253667643. The next prime is 1361253667687. The reversal of 1361253667649 is 9467663521631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1361253667649 - 2²⁰ = 1361252619073 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 5740172 + ... + 5972610.

It is an arithmetic number, because the mean of its divisors is an integer number (170298095760).

Almost surely, 2^{1361253667649} is an apocalyptic number.

It is an amenable number.

1361253667649 is a deficient number, since it is larger than the sum of its proper divisors (1131098431).

1361253667649 is a wasteful number, since it uses less digits than its factorization.

1361253667649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237279.

The product of its digits is 29393280, while the sum is 59.

The spelling of 1361253667649 in words is "one trillion, three hundred sixty-one billion, two hundred fifty-three million, six hundred sixty-seven thousand, six hundred forty-nine".