13223661140651 has 4 divisors (see below), whose sum is σ = 14240865843792. Its totient is φ = 12206456437512.

The previous prime is 13223661140609. The next prime is 13223661140671. The reversal of 13223661140651 is 15604116632231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13223661140651 - 2⁶ = 13223661140587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13223661140599 and 13223661140608.

It is not an unprimeable number, because it can be changed into a prime (13223661140671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508602351551 + ... + 508602351576.

It is an arithmetic number, because the mean of its divisors is an integer number (3560216460948).

Almost surely, 2^{13223661140651} is an apocalyptic number.

13223661140651 is a deficient number, since it is larger than the sum of its proper divisors (1017204703141).

13223661140651 is a wasteful number, since it uses less digits than its factorization.

13223661140651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017204703140.

The product of its (nonzero) digits is 155520, while the sum is 41.

Adding to 13223661140651 its reverse (15604116632231), we get a palindrome (28827777772882).

The spelling of 13223661140651 in words is "thirteen trillion, two hundred twenty-three billion, six hundred sixty-one million, one hundred forty thousand, six hundred fifty-one".