20147108984 has 64 divisors (see below), whose sum is σ = 39657600000. Its totient is φ = 9582588288.

The previous prime is 20147108903. The next prime is 20147109001. The reversal of 20147108984 is 48980174102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11857367 + ... + 11859065.

It is an arithmetic number, because the mean of its divisors is an integer number (619650000).

Almost surely, 2^20147108984 is an apocalyptic number.

It is an amenable number.

20147108984 is a deficient number, since it is larger than the sum of its proper divisors (19510491016).

20147108984 is a wasteful number, since it uses less digits than its factorization.

20147108984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460 (or 2456 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The spelling of 20147108984 in words is "twenty billion, one hundred forty-seven million, one hundred eight thousand, nine hundred eighty-four".