20515463332 has 96 divisors (see below), whose sum is σ = 46693785600. Its totient is φ = 7658934912.

The previous prime is 20515463321. The next prime is 20515463377. The reversal of 20515463332 is 23336451502.

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 31 ways as a sum of consecutive naturals, for example, 1813269 + ... + 1824547.

It is an arithmetic number, because the mean of its divisors is an integer number (486393600).

Almost surely, 2^20515463332 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 20515463332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23346892800).

20515463332 is an abundant number, since it is smaller than the sum of its proper divisors (26178322268).

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

20515463332 is a wasteful number, since it uses less digits than its factorization.

20515463332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11585 (or 11583 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 34.

The spelling of 20515463332 in words is "twenty billion, five hundred fifteen million, four hundred sixty-three thousand, three hundred thirty-two".