20405422748160 has 960 divisors, whose sum is σ = 76201503041664. Its totient is φ = 5229055180800.

The previous prime is 20405422748147. The next prime is 20405422748167. The reversal of 20405422748160 is 6184722450402.

20405422748160 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 542 + 2 + 7 + 48 + 1 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a super-2 number, since 2×20405422748160² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (20405422748167) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1708847790 + ... + 1708859730.

Almost surely, 2^{20405422748160} is an apocalyptic number.

20405422748160 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 20405422748160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38100751520832).

20405422748160 is an abundant number, since it is smaller than the sum of its proper divisors (55796080293504).

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

20405422748160 is an equidigital number, since it uses as much as digits as its factorization.

20405422748160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12087 (or 12059 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 45.

The spelling of 20405422748160 in words is "twenty trillion, four hundred five billion, four hundred twenty-two million, seven hundred forty-eight thousand, one hundred sixty".