1361172638845 has 32 divisors (see below), whose sum is σ = 1676106432000. Its totient is φ = 1060872637440.

The previous prime is 1361172638827. The next prime is 1361172638953. The reversal of 1361172638845 is 5488362711631.

It is not a de Polignac number, because 1361172638845 - 2²¹ = 1361170541693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17412156 + ... + 17490154.

It is an arithmetic number, because the mean of its divisors is an integer number (52378326000).

Almost surely, 2^{1361172638845} is an apocalyptic number.

It is an amenable number.

1361172638845 is a deficient number, since it is larger than the sum of its proper divisors (314933793155).

1361172638845 is a wasteful number, since it uses less digits than its factorization.

1361172638845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78645.

The product of its digits is 5806080, while the sum is 55.

The spelling of 1361172638845 in words is "one trillion, three hundred sixty-one billion, one hundred seventy-two million, six hundred thirty-eight thousand, eight hundred forty-five".