13201321655 has 24 divisors (see below), whose sum is σ = 16399210752. Its totient is φ = 10200800000.

The previous prime is 13201321583. The next prime is 13201321663. The reversal of 13201321655 is 55612310231.

It is not a de Polignac number, because 13201321655 - 2³⁰ = 12127579831 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 841130 + ... + 856680.

It is an arithmetic number, because the mean of its divisors is an integer number (683300448).

Almost surely, 2^13201321655 is an apocalyptic number.

13201321655 is a deficient number, since it is larger than the sum of its proper divisors (3197889097).

13201321655 is a wasteful number, since it uses less digits than its factorization.

13201321655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15739 (or 15698 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 13201321655 its reverse (55612310231), we get a palindrome (68813631886).

The spelling of 13201321655 in words is "thirteen billion, two hundred one million, three hundred twenty-one thousand, six hundred fifty-five".