20752470918144 has 297 divisors, whose sum is σ = 69715827696567. Its totient is φ = 5928402751488.

The previous prime is 20752470918133. The next prime is 20752470918173. The reversal of 20752470918144 is 44181907425702.

It is a happy number.

The square root of 20752470918144 is 4555488.

It is a perfect power (a square), and thus also a powerful number.

20752470918144 is a `hidden beast` number, since 2 + 0 + 7 + 5 + 2 + 470 + 91 + 81 + 4 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3061284547 + ... + 3061291325.

Almost surely, 2^{20752470918144} is an apocalyptic number.

20752470918144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

20752470918144 is the 4555488-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20752470918144

20752470918144 is an abundant number, since it is smaller than the sum of its proper divisors (48963356778423).

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

20752470918144 is an frugal number, since it uses more digits than its factorization.

20752470918144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13598 (or 6791 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 20752470918144 in words is "twenty trillion, seven hundred fifty-two billion, four hundred seventy million, nine hundred eighteen thousand, one hundred forty-four".