1361253671644 has 24 divisors (see below), whose sum is σ = 2392318880336. Its totient is φ = 677734560000.

The previous prime is 1361253671639. The next prime is 1361253671699. The reversal of 1361253671644 is 4461763521631.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10317694 + ... + 10448794.

Almost surely, 2^{1361253671644} is an apocalyptic number.

It is an amenable number.

1361253671644 is a deficient number, since it is larger than the sum of its proper divisors (1031065208692).

1361253671644 is a wasteful number, since it uses less digits than its factorization.

1361253671644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142117 (or 142115 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 49.

The spelling of 1361253671644 in words is "one trillion, three hundred sixty-one billion, two hundred fifty-three million, six hundred seventy-one thousand, six hundred forty-four".