13163245621455 has 32 divisors (see below), whose sum is σ = 21575177201088. Its totient is φ = 6849074304000.

The previous prime is 13163245621423. The next prime is 13163245621459. The reversal of 13163245621455 is 55412654236131.

It is a happy number.

It is not a de Polignac number, because 13163245621455 - 2⁵ = 13163245621423 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13163245621459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80914857 + ... + 81077373.

It is an arithmetic number, because the mean of its divisors is an integer number (674224287534).

Almost surely, 2^{13163245621455} is an apocalyptic number.

13163245621455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13163245621455 is a deficient number, since it is larger than the sum of its proper divisors (8411931579633).

13163245621455 is a wasteful number, since it uses less digits than its factorization.

13163245621455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294267.

The product of its digits is 2592000, while the sum is 48.

Adding to 13163245621455 its reverse (55412654236131), we get a palindrome (68575899857586).

The spelling of 13163245621455 in words is "thirteen trillion, one hundred sixty-three billion, two hundred forty-five million, six hundred twenty-one thousand, four hundred fifty-five".