13163621223516 has 48 divisors (see below), whose sum is σ = 31071710718720. Its totient is φ = 4336968113280.

The previous prime is 13163621223463. The next prime is 13163621223517. The reversal of 13163621223516 is 61532212636131.

It is a happy number.

It is a super-3 number, since 3×13163621223516³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13163621223517) 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, 614481 + ... + 5167671.

It is an arithmetic number, because the mean of its divisors is an integer number (647327306640).

Almost surely, 2^{13163621223516} is an apocalyptic number.

It is an amenable number.

13163621223516 is an abundant number, since it is smaller than the sum of its proper divisors (17908089495204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13163621223516 is a wasteful number, since it uses less digits than its factorization.

13163621223516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4555994 (or 4555992 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

Adding to 13163621223516 its reverse (61532212636131), we get a palindrome (74695833859647).

The spelling of 13163621223516 in words is "thirteen trillion, one hundred sixty-three billion, six hundred twenty-one million, two hundred twenty-three thousand, five hundred sixteen".