20031477480 has 96 divisors (see below), whose sum is σ = 74402640000. Its totient is φ = 4578622848.

The previous prime is 20031477467. The next prime is 20031477481. The reversal of 20031477480 is 8477413002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20031477481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3971980 + ... + 3977019.

It is an arithmetic number, because the mean of its divisors is an integer number (775027500).

Almost surely, 2^20031477480 is an apocalyptic number.

20031477480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20031477480 is an abundant number, since it is smaller than the sum of its proper divisors (54371162520).

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

20031477480 is a wasteful number, since it uses less digits than its factorization.

20031477480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7949023 (or 7949016 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The spelling of 20031477480 in words is "twenty billion, thirty-one million, four hundred seventy-seven thousand, four hundred eighty".