13172474367738 has 96 divisors (see below), whose sum is σ = 32920905094272. Its totient is φ = 3728592000000.

The previous prime is 13172474367709. The next prime is 13172474367739. The reversal of 13172474367738 is 83776347427131.

13172474367738 is a `hidden beast` number, since 1 + 3 + 1 + 72 + 474 + 3 + 67 + 7 + 38 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (13172474367739) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31844238 + ... + 32255238.

It is an arithmetic number, because the mean of its divisors is an integer number (342926094732).

Almost surely, 2^{13172474367738} is an apocalyptic number.

13172474367738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13172474367738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16460452547136).

13172474367738 is an abundant number, since it is smaller than the sum of its proper divisors (19748430726534).

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

13172474367738 is a wasteful number, since it uses less digits than its factorization.

13172474367738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413380 (or 413377 counting only the distinct ones).

The product of its digits is 99574272, while the sum is 63.

The spelling of 13172474367738 in words is "thirteen trillion, one hundred seventy-two billion, four hundred seventy-four million, three hundred sixty-seven thousand, seven hundred thirty-eight".