20875647154 has 8 divisors (see below), whose sum is σ = 31326618240. Its totient is φ = 10433441076.

The previous prime is 20875647139. The next prime is 20875647157. The reversal of 20875647154 is 45174657802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20875647098 and 20875647107.

It is not an unprimeable number, because it can be changed into a prime (20875647157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2185294 + ... + 2194825.

It is an arithmetic number, because the mean of its divisors is an integer number (3915827280).

Almost surely, 2^20875647154 is an apocalyptic number.

20875647154 is a deficient number, since it is larger than the sum of its proper divisors (10450971086).

20875647154 is a wasteful number, since it uses less digits than its factorization.

20875647154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4382504.

The product of its (nonzero) digits is 1881600, while the sum is 49.

The spelling of 20875647154 in words is "twenty billion, eight hundred seventy-five million, six hundred forty-seven thousand, one hundred fifty-four".