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54580868479 = 199274275721
BaseRepresentation
bin110010110101010001…
…011111010101111111
312012212211112101211101
4302311101133111333
51343240200242404
641024001233531
73641364504304
oct626521372577
9165784471741
1054580868479
1121169528375
12a6b30328a7
1351bab1bca7
1428dac8b0ab
151646b092a4
hexcb545f57f

54580868479 has 4 divisors (see below), whose sum is σ = 54855144400. Its totient is φ = 54306592560.

The previous prime is 54580868467. The next prime is 54580868501. The reversal of 54580868479 is 97486808545.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 54580868479 - 213 = 54580860287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54580868479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54580868429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137137662 + ... + 137138059.

It is an arithmetic number, because the mean of its divisors is an integer number (13713786100).

Almost surely, 254580868479 is an apocalyptic number.

54580868479 is a deficient number, since it is larger than the sum of its proper divisors (274275921).

54580868479 is a wasteful number, since it uses less digits than its factorization.

54580868479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274275920.

The product of its (nonzero) digits is 77414400, while the sum is 64.

The spelling of 54580868479 in words is "fifty-four billion, five hundred eighty million, eight hundred sixty-eight thousand, four hundred seventy-nine".

Divisors: 1 199 274275721 54580868479