1321633121874 has 16 divisors (see below), whose sum is σ = 2846594416512. Its totient is φ = 406656345168.

The previous prime is 1321633121869. The next prime is 1321633121971. The reversal of 1321633121874 is 4781213361231.

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, 8472007114 + ... + 8472007269.

It is an arithmetic number, because the mean of its divisors is an integer number (177912151032).

Almost surely, 2^{1321633121874} is an apocalyptic number.

1321633121874 is an abundant number, since it is smaller than the sum of its proper divisors (1524961294638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321633121874 is a wasteful number, since it uses less digits than its factorization.

1321633121874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16944014401.

The product of its digits is 145152, while the sum is 42.

The spelling of 1321633121874 in words is "one trillion, three hundred twenty-one billion, six hundred thirty-three million, one hundred twenty-one thousand, eight hundred seventy-four".