20655662102 has 4 divisors (see below), whose sum is σ = 30983493156. Its totient is φ = 10327831050.

The previous prime is 20655662101. The next prime is 20655662107. The reversal of 20655662102 is 20126655602.

20655662102 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20126655602 = 2 ⋅10063327801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20655662101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5163915524 + ... + 5163915527.

It is an arithmetic number, because the mean of its divisors is an integer number (7745873289).

Almost surely, 2^20655662102 is an apocalyptic number.

20655662102 is a deficient number, since it is larger than the sum of its proper divisors (10327831054).

20655662102 is a wasteful number, since it uses less digits than its factorization.

20655662102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10327831053.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 20655662102 in words is "twenty billion, six hundred fifty-five million, six hundred sixty-two thousand, one hundred two".