20976011380 has 48 divisors (see below), whose sum is σ = 45130853376. Its totient is φ = 8186895360.

The previous prime is 20976011363. The next prime is 20976011383. The reversal of 20976011380 is 8311067902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20976011383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61597 + ... + 213883.

It is an arithmetic number, because the mean of its divisors is an integer number (940226112).

Almost surely, 2^20976011380 is an apocalyptic number.

20976011380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20976011380 is an abundant number, since it is smaller than the sum of its proper divisors (24154841996).

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

20976011380 is a wasteful number, since it uses less digits than its factorization.

20976011380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152464 (or 152462 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 20976011380 in words is "twenty billion, nine hundred seventy-six million, eleven thousand, three hundred eighty".