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54870807845 = 5721911787499
BaseRepresentation
bin110011000110100011…
…100001010100100101
312020122001002211212102
4303012203201110211
51344333411322340
641112435501445
73651515112500
oct630643412445
9166561084772
1054870807845
11212a8160087
12a774157885
135235c06749
1429275a2137
1516622cc215
hexcc68e1525

54870807845 has 24 divisors (see below), whose sum is σ = 80626500000. Its totient is φ = 35645393952.

The previous prime is 54870807841. The next prime is 54870807847.

54870807845 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 54870807845 - 22 = 54870807841 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54870807841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5889095 + ... + 5898404.

It is an arithmetic number, because the mean of its divisors is an integer number (3359437500).

Almost surely, 254870807845 is an apocalyptic number.

It is an amenable number.

54870807845 is a deficient number, since it is larger than the sum of its proper divisors (25755692155).

54870807845 is a wasteful number, since it uses less digits than its factorization.

54870807845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11787537 (or 11787530 counting only the distinct ones).

The product of its (nonzero) digits is 10035200, while the sum is 56.

The spelling of 54870807845 in words is "fifty-four billion, eight hundred seventy million, eight hundred seven thousand, eight hundred forty-five".

Divisors: 1 5 7 19 35 49 95 133 245 665 931 4655 11787499 58937495 82512493 223962481 412562465 577587451 1119812405 1567737367 2887937255 7838686835 10974161569 54870807845