20554700455 has 8 divisors (see below), whose sum is σ = 24667981632. Its totient is φ = 16442199648.

The previous prime is 20554700449. The next prime is 20554700473. The reversal of 20554700455 is 55400745502.

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

It is a cyclic number.

It is not a de Polignac number, because 20554700455 - 2⁵ = 20554700423 is a prime.

It is a Duffinian 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, 135487 + ... + 243856.

It is an arithmetic number, because the mean of its divisors is an integer number (3083497704).

Almost surely, 2^20554700455 is an apocalyptic number.

20554700455 is a deficient number, since it is larger than the sum of its proper divisors (4113281177).

20554700455 is a wasteful number, since it uses less digits than its factorization.

20554700455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390185.

The product of its (nonzero) digits is 140000, while the sum is 37.

The spelling of 20554700455 in words is "twenty billion, five hundred fifty-four million, seven hundred thousand, four hundred fifty-five".