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688530312153 = 32293079856787
BaseRepresentation
bin10100000010011111001…
…10101100101111011001
32102211012212020212220100
422001033212230233121
542240102224442103
61244150110050013
7100513265042235
oct12011746545731
92384185225810
10688530312153
11246005458432
12b15374a9909
134cc0b1415b8
1425479ccd5c5
1512d9c18b5a3
hexa04f9acbd9

688530312153 has 24 divisors (see below), whose sum is σ = 1029173745600. Its totient is φ = 443047467744.

The previous prime is 688530312143. The next prime is 688530312157. The reversal of 688530312153 is 351213035886.

688530312153 is a `hidden beast` number, since 6 + 88 + 530 + 31 + 2 + 1 + 5 + 3 = 666.

It is not a de Polignac number, because 688530312153 - 26 = 688530312089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 688530312099 and 688530312108.

It is not an unprimeable number, because it can be changed into a prime (688530312157) 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, 375226 + ... + 1232012.

It is an arithmetic number, because the mean of its divisors is an integer number (42882239400).

Almost surely, 2688530312153 is an apocalyptic number.

It is an amenable number.

688530312153 is a deficient number, since it is larger than the sum of its proper divisors (340643433447).

688530312153 is a wasteful number, since it uses less digits than its factorization.

688530312153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859901 (or 859898 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 688530312153 in words is "six hundred eighty-eight billion, five hundred thirty million, three hundred twelve thousand, one hundred fifty-three".

Divisors: 1 3 9 29 87 261 3079 9237 27711 89291 267873 803619 856787 2570361 7711083 24846823 74540469 223621407 2638047173 7914141519 23742424557 76503368017 229510104051 688530312153