20227549881987 has 144 divisors (see below), whose sum is σ = 36653637226752. Its totient is φ = 10519670154240.

The previous prime is 20227549881967. The next prime is 20227549882027. The reversal of 20227549881987 is 78918894572202.

20227549881987 is a `hidden beast` number, since 20 + 2 + 27 + 5 + 498 + 8 + 1 + 98 + 7 = 666.

It is not a de Polignac number, because 20227549881987 - 2⁷ = 20227549881859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20227549881907) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 109714312 + ... + 109898522.

It is an arithmetic number, because the mean of its divisors is an integer number (254539147408).

Almost surely, 2^{20227549881987} is an apocalyptic number.

20227549881987 is a deficient number, since it is larger than the sum of its proper divisors (16426087344765).

20227549881987 is a wasteful number, since it uses less digits than its factorization.

20227549881987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184458 (or 184438 counting only the distinct ones).

The product of its (nonzero) digits is 325140480, while the sum is 72.

The spelling of 20227549881987 in words is "twenty trillion, two hundred twenty-seven billion, five hundred forty-nine million, eight hundred eighty-one thousand, nine hundred eighty-seven".