1321543401404 has 6 divisors (see below), whose sum is σ = 2312700952464. Its totient is φ = 660771700700.

The previous prime is 1321543401391. The next prime is 1321543401413. The reversal of 1321543401404 is 4041043451231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165192925172 + ... + 165192925179.

It is an arithmetic number, because the mean of its divisors is an integer number (385450158744).

Almost surely, 2^{1321543401404} is an apocalyptic number.

It is an amenable number.

1321543401404 is a deficient number, since it is larger than the sum of its proper divisors (991157551060).

1321543401404 is a wasteful number, since it uses less digits than its factorization.

1321543401404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330385850355 (or 330385850353 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 1321543401404 its reverse (4041043451231), we get a palindrome (5362586852635).

The spelling of 1321543401404 in words is "one trillion, three hundred twenty-one billion, five hundred forty-three million, four hundred one thousand, four hundred four".