13144047961 has 8 divisors (see below), whose sum is σ = 14372235648. Its totient is φ = 11921406000.

The previous prime is 13144047949. The next prime is 13144047997. The reversal of 13144047961 is 16974044131.

It is a happy number.

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 13144047961 - 2²³ = 13135659353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13144047941) 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, 1381470 + ... + 1390951.

It is an arithmetic number, because the mean of its divisors is an integer number (1796529456).

Almost surely, 2^13144047961 is an apocalyptic number.

13144047961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13144047961 is a deficient number, since it is larger than the sum of its proper divisors (1228187687).

13144047961 is a wasteful number, since it uses less digits than its factorization.

13144047961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772863.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 13144047961 in words is "thirteen billion, one hundred forty-four million, forty-seven thousand, nine hundred sixty-one".