13143153121661 has 8 divisors (see below), whose sum is σ = 13596470520480. Its totient is φ = 12689842737712.

The previous prime is 13143153121649. The next prime is 13143153121663. The reversal of 13143153121661 is 16612135134131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13143153121661 - 2²² = 13143148927357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13143153121663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2210006 + ... + 5583048.

It is an arithmetic number, because the mean of its divisors is an integer number (1699558815060).

Almost surely, 2^{13143153121661} is an apocalyptic number.

It is an amenable number.

13143153121661 is a deficient number, since it is larger than the sum of its proper divisors (453317398819).

13143153121661 is a wasteful number, since it uses less digits than its factorization.

13143153121661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507435.

The product of its digits is 38880, while the sum is 38.

Adding to 13143153121661 its reverse (16612135134131), we get a palindrome (29755288255792).

The spelling of 13143153121661 in words is "thirteen trillion, one hundred forty-three billion, one hundred fifty-three million, one hundred twenty-one thousand, six hundred sixty-one".