20489874165348 has 144 divisors (see below), whose sum is σ = 57562310836800. Its totient is φ = 5649513596160.

The previous prime is 20489874165347. The next prime is 20489874165359. The reversal of 20489874165348 is 84356147898402.

It is a super-2 number, since 2×20489874165348² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20489874165347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33442318 + ... + 34049498.

It is an arithmetic number, because the mean of its divisors is an integer number (399738269700).

It is a 1-persistent number, because it is pandigital, but 2⋅20489874165348 = 40979748330696 is not.

Almost surely, 2^{20489874165348} is an apocalyptic number.

20489874165348 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20489874165348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28781155418400).

20489874165348 is an abundant number, since it is smaller than the sum of its proper divisors (37072436671452).

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

20489874165348 is a wasteful number, since it uses less digits than its factorization.

20489874165348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609210 (or 609201 counting only the distinct ones).

The product of its (nonzero) digits is 371589120, while the sum is 69.

The spelling of 20489874165348 in words is "twenty trillion, four hundred eighty-nine billion, eight hundred seventy-four million, one hundred sixty-five thousand, three hundred forty-eight".