20280147886184 has 128 divisors (see below), whose sum is σ = 41312899584000. Its totient is φ = 9300321628416.

The previous prime is 20280147886153. The next prime is 20280147886217. The reversal of 20280147886184 is 48168874108202.

It is a happy number.

It is a super-2 number, since 2×20280147886184² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1944959579 + ... + 1944970005.

It is an arithmetic number, because the mean of its divisors is an integer number (322757028000).

Almost surely, 2^{20280147886184} is an apocalyptic number.

It is an amenable number.

20280147886184 is an abundant number, since it is smaller than the sum of its proper divisors (21032751697816).

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

20280147886184 is a wasteful number, since it uses less digits than its factorization.

20280147886184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12175 (or 12171 counting only the distinct ones).

The product of its (nonzero) digits is 11010048, while the sum is 59.

The spelling of 20280147886184 in words is "twenty trillion, two hundred eighty billion, one hundred forty-seven million, eight hundred eighty-six thousand, one hundred eighty-four".