1361474044621 has 8 divisors (see below), whose sum is σ = 1422941236920. Its totient is φ = 1300974839808.

The previous prime is 1361474044591. The next prime is 1361474044627. The reversal of 1361474044621 is 1264404741631.

It can be written as a sum of positive squares in 4 ways, for example, as 544599720900 + 816874323721 = 737970^2 + 903811^2 .

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 1361474044621 - 2¹¹ = 1361474042573 is a prime.

It is a super-2 number, since 2×1361474044621² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361474044627) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 241993996 + ... + 241999621.

It is an arithmetic number, because the mean of its divisors is an integer number (177867654615).

Almost surely, 2^{1361474044621} is an apocalyptic number.

It is an amenable number.

1361474044621 is a deficient number, since it is larger than the sum of its proper divisors (61467192299).

1361474044621 is an equidigital number, since it uses as much as digits as its factorization.

1361474044621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483993743.

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 1361474044621 in words is "one trillion, three hundred sixty-one billion, four hundred seventy-four million, forty-four thousand, six hundred twenty-one".