20471244948 has 72 divisors (see below), whose sum is σ = 64515447360. Its totient is φ = 5317205760.

The previous prime is 20471244947. The next prime is 20471245027. The reversal of 20471244948 is 84944217402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20471244947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3689733 + ... + 3695276.

It is an arithmetic number, because the mean of its divisors is an integer number (896047880).

Almost surely, 2^20471244948 is an apocalyptic number.

20471244948 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20471244948 is an abundant number, since it is smaller than the sum of its proper divisors (44044202412).

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

20471244948 is a wasteful number, since it uses less digits than its factorization.

20471244948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7385037 (or 7385032 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 20471244948 in words is "twenty billion, four hundred seventy-one million, two hundred forty-four thousand, nine hundred forty-eight".