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52986109885 = 510597221977
BaseRepresentation
bin110001010110001101…
…111101111110111101
312001202200201021022021
4301112031331332331
51332003421004020
640201432120141
73554021334322
oct612615757675
9161680637267
1052986109885
1120520306665
12a328b36051
134cc55ccb57
1427c915cb49
1515a1ae31aa
hexc5637dfbd

52986109885 has 4 divisors (see below), whose sum is σ = 63583331868. Its totient is φ = 42388887904.

The previous prime is 52986109879. The next prime is 52986109903. The reversal of 52986109885 is 58890168925.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32407920484 + 20578189401 = 180022^2 + 143451^2 .

It is a cyclic number.

It is not a de Polignac number, because 52986109885 - 23 = 52986109877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5298610984 + ... + 5298610993.

It is an arithmetic number, because the mean of its divisors is an integer number (15895832967).

Almost surely, 252986109885 is an apocalyptic number.

It is an amenable number.

52986109885 is a deficient number, since it is larger than the sum of its proper divisors (10597221983).

52986109885 is a wasteful number, since it uses less digits than its factorization.

52986109885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10597221982.

The product of its (nonzero) digits is 12441600, while the sum is 61.

The spelling of 52986109885 in words is "fifty-two billion, nine hundred eighty-six million, one hundred nine thousand, eight hundred eighty-five".

Divisors: 1 5 10597221977 52986109885