20923054854 has 16 divisors (see below), whose sum is σ = 45065041392. Its totient is φ = 6437863008.

The previous prime is 20923054849. The next prime is 20923054877. The reversal of 20923054854 is 45845032902.

It is a super-3 number, since 3×20923054854³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134122069 + ... + 134122224.

It is an arithmetic number, because the mean of its divisors is an integer number (2816565087).

Almost surely, 2^20923054854 is an apocalyptic number.

20923054854 is an abundant number, since it is smaller than the sum of its proper divisors (24141986538).

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

20923054854 is a wasteful number, since it uses less digits than its factorization.

20923054854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268244311.

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 20923054854 in words is "twenty billion, nine hundred twenty-three million, fifty-four thousand, eight hundred fifty-four".