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42877660165 = 58575532033
BaseRepresentation
bin100111111011101101…
…010010110000000101
311002200012212211010121
4213323231102300011
51200303140111130
631410413021541
73045356045404
oct477355226005
9132605784117
1042877660165
111720335978a
1283877848b1
134074300b62
14210a84963b
1511ae461d7a
hex9fbb52c05

42877660165 has 4 divisors (see below), whose sum is σ = 51453192204. Its totient is φ = 34302128128.

The previous prime is 42877660157. The next prime is 42877660187. The reversal of 42877660165 is 56106677824.

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 23755748641 + 19121911524 = 154129^2 + 138282^2 .

It is a cyclic number.

It is not a de Polignac number, because 42877660165 - 23 = 42877660157 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 3 ways as a sum of consecutive naturals, for example, 4287766012 + ... + 4287766021.

It is an arithmetic number, because the mean of its divisors is an integer number (12863298051).

Almost surely, 242877660165 is an apocalyptic number.

It is an amenable number.

42877660165 is a deficient number, since it is larger than the sum of its proper divisors (8575532039).

42877660165 is an equidigital number, since it uses as much as digits as its factorization.

42877660165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8575532038.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 42877660165 in words is "forty-two billion, eight hundred seventy-seven million, six hundred sixty thousand, one hundred sixty-five".

Divisors: 1 5 8575532033 42877660165