20112543452 has 12 divisors (see below), whose sum is σ = 35430044496. Its totient is φ = 9989673600.

The previous prime is 20112543433. The next prime is 20112543487. The reversal of 20112543452 is 25434521102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16648853 + ... + 16650060.

It is an arithmetic number, because the mean of its divisors is an integer number (2952503708).

Almost surely, 2^20112543452 is an apocalyptic number.

It is an amenable number.

20112543452 is a deficient number, since it is larger than the sum of its proper divisors (15317501044).

20112543452 is a wasteful number, since it uses less digits than its factorization.

20112543452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33299068 (or 33299066 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 20112543452 in words is "twenty billion, one hundred twelve million, five hundred forty-three thousand, four hundred fifty-two".