20878565376 has 224 divisors, whose sum is σ = 59513541120. Its totient is φ = 6494552064.

The previous prime is 20878565347. The next prime is 20878565413. The reversal of 20878565376 is 67356587802.

It is an unprimeable number.

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, 24305235 + ... + 24306093.

Almost surely, 2^20878565376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20878565376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29756770560).

20878565376 is an abundant number, since it is smaller than the sum of its proper divisors (38634975744).

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

20878565376 is an equidigital number, since it uses as much as digits as its factorization.

20878565376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954 (or 930 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 57.

The spelling of 20878565376 in words is "twenty billion, eight hundred seventy-eight million, five hundred sixty-five thousand, three hundred seventy-six".