20271610608 has 80 divisors (see below), whose sum is σ = 54215625216. Its totient is φ = 6522785280.

The previous prime is 20271610553. The next prime is 20271610621. The reversal of 20271610608 is 80601617202.

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, 103143 + ... + 226233.

Almost surely, 2^20271610608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20271610608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27107812608).

20271610608 is an abundant number, since it is smaller than the sum of its proper divisors (33944014608).

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

20271610608 is a wasteful number, since it uses less digits than its factorization.

20271610608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123222 (or 123216 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The spelling of 20271610608 in words is "twenty billion, two hundred seventy-one million, six hundred ten thousand, six hundred eight".