20145452524 has 6 divisors (see below), whose sum is σ = 35254541924. Its totient is φ = 10072726260.

The previous prime is 20145452429. The next prime is 20145452527. The reversal of 20145452524 is 42525454102.

It is a self number, because there is not a number n which added to its sum of digits gives 20145452524.

It is not an unprimeable number, because it can be changed into a prime (20145452527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2518181562 + ... + 2518181569.

Almost surely, 2^20145452524 is an apocalyptic number.

It is an amenable number.

20145452524 is a deficient number, since it is larger than the sum of its proper divisors (15109089400).

20145452524 is a wasteful number, since it uses less digits than its factorization.

20145452524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5036363135 (or 5036363133 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

The spelling of 20145452524 in words is "twenty billion, one hundred forty-five million, four hundred fifty-two thousand, five hundred twenty-four".