20837689122480 has 160 divisors (see below), whose sum is σ = 66685531281408. Its totient is φ = 5377070899200.

The previous prime is 20837689122431. The next prime is 20837689122491. The reversal of 20837689122480 is 8422198673802.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108237667 + ... + 108430013.

Almost surely, 2^{20837689122480} is an apocalyptic number.

20837689122480 is a gapful number since it is divisible by the number (20) 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 20837689122480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33342765640704).

20837689122480 is an abundant number, since it is smaller than the sum of its proper divisors (45847842158928).

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

20837689122480 is a wasteful number, since it uses less digits than its factorization.

20837689122480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206955 (or 206949 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 60.

The spelling of 20837689122480 in words is "twenty trillion, eight hundred thirty-seven billion, six hundred eighty-nine million, one hundred twenty-two thousand, four hundred eighty".