20554273755 has 48 divisors (see below), whose sum is σ = 36011083680. Its totient is φ = 10844865024.

The previous prime is 20554273721. The next prime is 20554273823. The reversal of 20554273755 is 55737245502.

20554273755 is a `hidden beast` number, since 2 + 0 + 554 + 27 + 3 + 75 + 5 = 666.

It is not a de Polignac number, because 20554273755 - 2⁸ = 20554273499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20554273755.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1580359 + ... + 1593311.

It is an arithmetic number, because the mean of its divisors is an integer number (750230910).

Almost surely, 2^20554273755 is an apocalyptic number.

20554273755 is a deficient number, since it is larger than the sum of its proper divisors (15456809925).

20554273755 is a wasteful number, since it uses less digits than its factorization.

20554273755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13340 (or 13337 counting only the distinct ones).

The product of its (nonzero) digits is 1470000, while the sum is 45.

The spelling of 20554273755 in words is "twenty billion, five hundred fifty-four million, two hundred seventy-three thousand, seven hundred fifty-five".