20675192538 has 64 divisors (see below), whose sum is σ = 55519414272. Its totient is φ = 4957087680.

The previous prime is 20675192497. The next prime is 20675192539. The reversal of 20675192538 is 83529157602.

It is not an unprimeable number, because it can be changed into a prime (20675192539) 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 in 31 ways as a sum of consecutive naturals, for example, 1715206 + ... + 1727217.

It is an arithmetic number, because the mean of its divisors is an integer number (867490848).

Almost surely, 2^20675192538 is an apocalyptic number.

20675192538 is an abundant number, since it is smaller than the sum of its proper divisors (34844221734).

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

20675192538 is a wasteful number, since it uses less digits than its factorization.

20675192538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442459.

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 20675192538 in words is "twenty billion, six hundred seventy-five million, one hundred ninety-two thousand, five hundred thirty-eight".