20215874553 has 16 divisors (see below), whose sum is σ = 30811539840. Its totient is φ = 11549529216.

The previous prime is 20215874527. The next prime is 20215874561. The reversal of 20215874553 is 35547851202.

It is not a de Polignac number, because 20215874553 - 2⁵ = 20215874521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20215874453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6183 + ... + 201171.

It is an arithmetic number, because the mean of its divisors is an integer number (1925721240).

Almost surely, 2^20215874553 is an apocalyptic number.

It is an amenable number.

20215874553 is a deficient number, since it is larger than the sum of its proper divisors (10595665287).

20215874553 is a wasteful number, since it uses less digits than its factorization.

20215874553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199936.

The product of its (nonzero) digits is 336000, while the sum is 42.

The spelling of 20215874553 in words is "twenty billion, two hundred fifteen million, eight hundred seventy-four thousand, five hundred fifty-three".