13156772745455 has 16 divisors (see below), whose sum is σ = 16623577094880. Its totient is φ = 9968751378432.

The previous prime is 13156772745451. The next prime is 13156772745463. The reversal of 13156772745455 is 55454727765131.

It is a cyclic number.

It is not a de Polignac number, because 13156772745455 - 2² = 13156772745451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13156772745451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18379154 + ... + 19081583.

It is an arithmetic number, because the mean of its divisors is an integer number (1038973568430).

Almost surely, 2^{13156772745455} is an apocalyptic number.

13156772745455 is a deficient number, since it is larger than the sum of its proper divisors (3466804349425).

13156772745455 is a wasteful number, since it uses less digits than its factorization.

13156772745455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37464458.

The product of its digits is 123480000, while the sum is 62.

The spelling of 13156772745455 in words is "thirteen trillion, one hundred fifty-six billion, seven hundred seventy-two million, seven hundred forty-five thousand, four hundred fifty-five".