20452551232 has 14 divisors (see below), whose sum is σ = 40585531478. Its totient is φ = 10226275584.

The previous prime is 20452551179. The next prime is 20452551263. The reversal of 20452551232 is 23215525402.

It can be written as a sum of positive squares in only one way, i.e., 16531787776 + 3920763456 = 128576^2 + 62616^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20452551194 and 20452551203.

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 as a sum of consecutive naturals, namely, 159785493 + ... + 159785620.

Almost surely, 2^20452551232 is an apocalyptic number.

It is an amenable number.

20452551232 is a deficient number, since it is larger than the sum of its proper divisors (20132980246).

20452551232 is an equidigital number, since it uses as much as digits as its factorization.

20452551232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319571125 (or 319571115 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 20452551232 in words is "twenty billion, four hundred fifty-two million, five hundred fifty-one thousand, two hundred thirty-two".