20215005875 has 8 divisors (see below), whose sum is σ = 25228327488. Its totient is φ = 16172004600.

The previous prime is 20215005793. The next prime is 20215005887. The reversal of 20215005875 is 57850051202.

It is not a de Polignac number, because 20215005875 - 2¹⁰ = 20215004851 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80859899 + ... + 80860148.

It is an arithmetic number, because the mean of its divisors is an integer number (3153540936).

Almost surely, 2^20215005875 is an apocalyptic number.

20215005875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20215005875 is a deficient number, since it is larger than the sum of its proper divisors (5013321613).

20215005875 is an equidigital number, since it uses as much as digits as its factorization.

20215005875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161720062 (or 161720052 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 35.

The spelling of 20215005875 in words is "twenty billion, two hundred fifteen million, five thousand, eight hundred seventy-five".