20045602080 has 216 divisors, whose sum is σ = 79574161212. Its totient is φ = 4581835776.

The previous prime is 20045602021. The next prime is 20045602081. The reversal of 20045602080 is 8020654002.

20045602080 is a `hidden beast` number, since 2 + 0 + 0 + 4 + 560 + 20 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18085946256 + 1959655824 = 134484^2 + 44268^2 .

It is not an unprimeable number, because it can be changed into a prime (20045602081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 71487 + ... + 212606.

Almost surely, 2^20045602080 is an apocalyptic number.

20045602080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20045602080 is an abundant number, since it is smaller than the sum of its proper divisors (59528559132).

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

20045602080 is a wasteful number, since it uses less digits than its factorization.

20045602080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284128 (or 284110 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The spelling of 20045602080 in words is "twenty billion, forty-five million, six hundred two thousand, eighty".