20552182281 has 24 divisors (see below), whose sum is σ = 30284708480. Its totient is φ = 13427013600.

The previous prime is 20552182271. The next prime is 20552182291. The reversal of 20552182281 is 18228125502.

20552182281 is a `hidden beast` number, since 2 + 0 + 552 + 1 + 8 + 22 + 81 = 666.

It is an interprime number because it is at equal distance from previous prime (20552182271) and next prime (20552182291).

It is not a de Polignac number, because 20552182281 - 2³¹ = 18404698633 is a prime.

It is a super-2 number, since 2×20552182281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20552182201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79710 + ... + 217848.

Almost surely, 2^20552182281 is an apocalyptic number.

It is an amenable number.

20552182281 is a deficient number, since it is larger than the sum of its proper divisors (9732526199).

20552182281 is a wasteful number, since it uses less digits than its factorization.

20552182281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138477 (or 138474 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The spelling of 20552182281 in words is "twenty billion, five hundred fifty-two million, one hundred eighty-two thousand, two hundred eighty-one".