20066358676 has 72 divisors (see below), whose sum is σ = 44075975496. Its totient is φ = 7923121920.

The previous prime is 20066358661. The next prime is 20066358677. The reversal of 20066358676 is 67685366002.

It can be written as a sum of positive squares in 4 ways, for example, as 32787076 + 20033571600 = 5726^2 + 141540^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20066358677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1371190 + ... + 1385746.

Almost surely, 2^20066358676 is an apocalyptic number.

20066358676 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20066358676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22037987748).

20066358676 is an abundant number, since it is smaller than the sum of its proper divisors (24009616820).

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

20066358676 is a wasteful number, since it uses less digits than its factorization.

20066358676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15129 (or 15120 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 20066358676 in words is "twenty billion, sixty-six million, three hundred fifty-eight thousand, six hundred seventy-six".