20663876142 has 240 divisors, whose sum is σ = 61422474960. Its totient is φ = 5128800768.

The previous prime is 20663876141. The next prime is 20663876153. The reversal of 20663876142 is 24167836602.

20663876142 is a `hidden beast` number, since 2 + 0 + 6 + 638 + 7 + 6 + 1 + 4 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20663876141) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1748409 + ... + 1760187.

It is an arithmetic number, because the mean of its divisors is an integer number (255926979).

Almost surely, 2^20663876142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20663876142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30711237480).

20663876142 is an abundant number, since it is smaller than the sum of its proper divisors (40758598818).

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

20663876142 is a wasteful number, since it uses less digits than its factorization.

20663876142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11837 (or 11821 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 20663876142 in words is "twenty billion, six hundred sixty-three million, eight hundred seventy-six thousand, one hundred forty-two".