13426551321 has 16 divisors (see below), whose sum is σ = 18316212480. Its totient is φ = 8745376640.

The previous prime is 13426551317. The next prime is 13426551331. The reversal of 13426551321 is 12315562431.

It is a cyclic number.

It is not a de Polignac number, because 13426551321 - 2² = 13426551317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13426551331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138660 + ... + 214661.

It is an arithmetic number, because the mean of its divisors is an integer number (1144763280).

Almost surely, 2^13426551321 is an apocalyptic number.

It is an amenable number.

13426551321 is a deficient number, since it is larger than the sum of its proper divisors (4889661159).

13426551321 is a wasteful number, since it uses less digits than its factorization.

13426551321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353616.

The product of its digits is 21600, while the sum is 33.

The spelling of 13426551321 in words is "thirteen billion, four hundred twenty-six million, five hundred fifty-one thousand, three hundred twenty-one".