20120647487028 has 72 divisors (see below), whose sum is σ = 51913202851776. Its totient is φ = 6060655856640.

The previous prime is 20120647487009. The next prime is 20120647487099. The reversal of 20120647487028 is 82078474602102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41246125 + ... + 41731092.

Almost surely, 2^{20120647487028} is an apocalyptic number.

It is an amenable number.

20120647487028 is an abundant number, since it is smaller than the sum of its proper divisors (31792555364748).

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

20120647487028 is a wasteful number, since it uses less digits than its factorization.

20120647487028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82977413 (or 82977400 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 51.

The spelling of 20120647487028 in words is "twenty trillion, one hundred twenty billion, six hundred forty-seven million, four hundred eighty-seven thousand, twenty-eight".