20901179676 has 96 divisors (see below), whose sum is σ = 54014981440. Its totient is φ = 6248669184.

The previous prime is 20901179659. The next prime is 20901179699. The reversal of 20901179676 is 67697110902.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5059980 + ... + 5064108.

Almost surely, 2^20901179676 is an apocalyptic number.

20901179676 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 20901179676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27007490720).

20901179676 is an abundant number, since it is smaller than the sum of its proper divisors (33113801764).

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

20901179676 is a wasteful number, since it uses less digits than its factorization.

20901179676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063 (or 5061 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 48.

The spelling of 20901179676 in words is "twenty billion, nine hundred one million, one hundred seventy-nine thousand, six hundred seventy-six".