20650655484 has 120 divisors (see below), whose sum is σ = 55516784400. Its totient is φ = 6689537280.

The previous prime is 20650655479. The next prime is 20650655489. The reversal of 20650655484 is 48455605602.

It is an interprime number because it is at equal distance from previous prime (20650655479) and next prime (20650655489).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20650655489) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3570507 + ... + 3576285.

It is an arithmetic number, because the mean of its divisors is an integer number (462639870).

Almost surely, 2^20650655484 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 20650655484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27758392200).

20650655484 is an abundant number, since it is smaller than the sum of its proper divisors (34866128916).

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

20650655484 is a wasteful number, since it uses less digits than its factorization.

20650655484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105 (or 6094 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The spelling of 20650655484 in words is "twenty billion, six hundred fifty million, six hundred fifty-five thousand, four hundred eighty-four".