20551582948 has 96 divisors (see below), whose sum is σ = 42414067584. Its totient is φ = 8626894848.

The previous prime is 20551582943. The next prime is 20551582949. The reversal of 20551582948 is 84928515502.

It is not an unprimeable number, because it can be changed into a prime (20551582943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3135811 + ... + 3142357.

It is an arithmetic number, because the mean of its divisors is an integer number (441813204).

Almost surely, 2^20551582948 is an apocalyptic number.

It is an amenable number.

20551582948 is an abundant number, since it is smaller than the sum of its proper divisors (21862484636).

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

20551582948 is a wasteful number, since it uses less digits than its factorization.

20551582948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6701 (or 6699 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 49.

The spelling of 20551582948 in words is "twenty billion, five hundred fifty-one million, five hundred eighty-two thousand, nine hundred forty-eight".