20916478248 has 32 divisors (see below), whose sum is σ = 52295479200. Its totient is φ = 6971588288.

The previous prime is 20916478223. The next prime is 20916478267. The reversal of 20916478248 is 84287461902.

It is a self number, because there is not a number n which added to its sum of digits gives 20916478248.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347215 + ... + 402977.

It is an arithmetic number, because the mean of its divisors is an integer number (1634233725).

Almost surely, 2^20916478248 is an apocalyptic number.

It is an amenable number.

20916478248 is an abundant number, since it is smaller than the sum of its proper divisors (31379000952).

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

20916478248 is a wasteful number, since it uses less digits than its factorization.

20916478248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71401 (or 71397 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 20916478248 in words is "twenty billion, nine hundred sixteen million, four hundred seventy-eight thousand, two hundred forty-eight".