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55089669047 = 77869952721
BaseRepresentation
bin110011010011100110…
…011010001110110111
312021012021221010222212
4303103212122032313
51400310423402142
641150254444035
73660113314010
oct632346321667
9167167833885
1055089669047
11213aa755806
12a81550361b
13526c365a0a
142948694007
15167660ed82
hexcd399a3b7

55089669047 has 4 divisors (see below), whose sum is σ = 62959621776. Its totient is φ = 47219716320.

The previous prime is 55089669013. The next prime is 55089669049. The reversal of 55089669047 is 74096698055.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55089669047 - 220 = 55088620471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55089669049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3934976354 + ... + 3934976367.

It is an arithmetic number, because the mean of its divisors is an integer number (15739905444).

Almost surely, 255089669047 is an apocalyptic number.

55089669047 is a deficient number, since it is larger than the sum of its proper divisors (7869952729).

55089669047 is an equidigital number, since it uses as much as digits as its factorization.

55089669047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7869952728.

The product of its (nonzero) digits is 16329600, while the sum is 59.

The spelling of 55089669047 in words is "fifty-five billion, eighty-nine million, six hundred sixty-nine thousand, forty-seven".

Divisors: 1 7 7869952721 55089669047