13125251551144 has 8 divisors (see below), whose sum is σ = 24609846658410. Its totient is φ = 6562625775568.

The previous prime is 13125251551109. The next prime is 13125251551151. The reversal of 13125251551144 is 44115515252131.

It can be written as a sum of positive squares in only one way, i.e., 12069162364900 + 1056089186244 = 3474070^2 + 1027662^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 13125251551097 and 13125251551106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820328221939 + ... + 820328221954.

Almost surely, 2^{13125251551144} is an apocalyptic number.

It is an amenable number.

13125251551144 is a deficient number, since it is larger than the sum of its proper divisors (11484595107266).

13125251551144 is a wasteful number, since it uses less digits than its factorization.

13125251551144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640656443899 (or 1640656443895 counting only the distinct ones).

The product of its digits is 120000, while the sum is 40.

The spelling of 13125251551144 in words is "thirteen trillion, one hundred twenty-five billion, two hundred fifty-one million, five hundred fifty-one thousand, one hundred forty-four".