20476461632 has 56 divisors (see below), whose sum is σ = 44599079712. Its totient is φ = 9250329600.

The previous prime is 20476461571. The next prime is 20476461641. The reversal of 20476461632 is 23616467402.

It is a self number, because there is not a number n which added to its sum of digits gives 20476461632.

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, 25532 + ... + 203972.

Almost surely, 2^20476461632 is an apocalyptic number.

20476461632 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20476461632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22299539856).

20476461632 is an abundant number, since it is smaller than the sum of its proper divisors (24122618080).

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

20476461632 is a wasteful number, since it uses less digits than its factorization.

20476461632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178627 (or 178617 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 41.

The spelling of 20476461632 in words is "twenty billion, four hundred seventy-six million, four hundred sixty-one thousand, six hundred thirty-two".