20218388524 has 48 divisors (see below), whose sum is σ = 37749741120. Its totient is φ = 9442068480.

The previous prime is 20218388423. The next prime is 20218388549. The reversal of 20218388524 is 42588381202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7001809 + ... + 7004695.

It is an arithmetic number, because the mean of its divisors is an integer number (786452940).

Almost surely, 2^20218388524 is an apocalyptic number.

It is an amenable number.

20218388524 is a deficient number, since it is larger than the sum of its proper divisors (17531352596).

20218388524 is a wasteful number, since it uses less digits than its factorization.

20218388524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3658 (or 3656 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 43.

The spelling of 20218388524 in words is "twenty billion, two hundred eighteen million, three hundred eighty-eight thousand, five hundred twenty-four".