20480175721320 has 128 divisors (see below), whose sum is σ = 72482833981440. Its totient is φ = 4530177112320.

The previous prime is 20480175721309. The next prime is 20480175721337. The reversal of 20480175721320 is 2312757108402.

It is a happy number.

It is a super-2 number, since 2×20480175721320² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 393218502 + ... + 393270581.

It is an arithmetic number, because the mean of its divisors is an integer number (566272140480).

Almost surely, 2^{20480175721320} is an apocalyptic number.

20480175721320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20480175721320 is an abundant number, since it is smaller than the sum of its proper divisors (52002658260120).

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

20480175721320 is a wasteful number, since it uses less digits than its factorization.

20480175721320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786489135 (or 786489131 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 20480175721320 in words is "twenty trillion, four hundred eighty billion, one hundred seventy-five million, seven hundred twenty-one thousand, three hundred twenty".