20875401547 has 32 divisors (see below), whose sum is σ = 28600588800. Its totient is φ = 15015238560.

The previous prime is 20875401539. The next prime is 20875401551. The reversal of 20875401547 is 74510457802.

It is not a de Polignac number, because 20875401547 - 2³ = 20875401539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20875401527) 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, 163753 + ... + 261850.

It is an arithmetic number, because the mean of its divisors is an integer number (893768400).

Almost surely, 2^20875401547 is an apocalyptic number.

20875401547 is a deficient number, since it is larger than the sum of its proper divisors (7725187253).

20875401547 is a wasteful number, since it uses less digits than its factorization.

20875401547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425648 (or 425634 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 43.

The spelling of 20875401547 in words is "twenty billion, eight hundred seventy-five million, four hundred one thousand, five hundred forty-seven".