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52987976379 = 32131726640511
BaseRepresentation
bin110001010110010101…
…000101101010111011
312001202211020002122200
4301112111011222323
51332004410221004
640201540121243
73554043240102
oct612625055273
9161684202580
1052987976379
1120521370a18
12a329696223
134cc5b045a0
1427c94c7039
1515a1d61239
hexc56545abb

52987976379 has 24 divisors (see below), whose sum is σ = 87274317312. Its totient is φ = 30689867520.

The previous prime is 52987976351. The next prime is 52987976381. The reversal of 52987976379 is 97367978925.

52987976379 is a `hidden beast` number, since 529 + 8 + 7 + 97 + 6 + 3 + 7 + 9 = 666.

It is not a de Polignac number, because 52987976379 - 211 = 52987974331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52987976389) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 13318267 + ... + 13322244.

It is an arithmetic number, because the mean of its divisors is an integer number (3636429888).

Almost surely, 252987976379 is an apocalyptic number.

52987976379 is a deficient number, since it is larger than the sum of its proper divisors (34286340933).

52987976379 is a wasteful number, since it uses less digits than its factorization.

52987976379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26640547 (or 26640544 counting only the distinct ones).

The product of its digits is 360067680, while the sum is 72.

The spelling of 52987976379 in words is "fifty-two billion, nine hundred eighty-seven million, nine hundred seventy-six thousand, three hundred seventy-nine".

Divisors: 1 3 9 13 17 39 51 117 153 221 663 1989 26640511 79921533 239764599 346326643 452888687 1038979929 1358666061 3116939787 4075998183 5887552931 17662658793 52987976379