20401603232 has 24 divisors (see below), whose sum is σ = 40824113652. Its totient is φ = 10033574400.

The previous prime is 20401603147. The next prime is 20401603249. The reversal of 20401603232 is 23230610402.

It can be written as a sum of positive squares in 2 ways, for example, as 14632289296 + 5769313936 = 120964^2 + 75956^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20401603198 and 20401603207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5223869 + ... + 5227772.

Almost surely, 2^20401603232 is an apocalyptic number.

It is an amenable number.

20401603232 is an abundant number, since it is smaller than the sum of its proper divisors (20422510420).

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

20401603232 is a wasteful number, since it uses less digits than its factorization.

20401603232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10451712 (or 10451704 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The spelling of 20401603232 in words is "twenty billion, four hundred one million, six hundred three thousand, two hundred thirty-two".