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12928957071 = 347775311827
BaseRepresentation
bin11000000101010000…
…00011101010001111
31020101001010001212220
430002220003222033
5202434303111241
65534532230423
7635251215252
oct140250035217
936331101786
1012928957071
115535071898
122609a6b413
1312b0759574
148a9155099
1550a0bc166
hex302a03a8f

12928957071 has 16 divisors (see below), whose sum is σ = 17609147904. Its totient is φ = 8434113984.

The previous prime is 12928957057. The next prime is 12928957091. The reversal of 12928957071 is 17075982921.

It is not a de Polignac number, because 12928957071 - 29 = 12928956559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12928957001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1087260 + ... + 1099086.

It is an arithmetic number, because the mean of its divisors is an integer number (1100571744).

Almost surely, 212928957071 is an apocalyptic number.

12928957071 is a deficient number, since it is larger than the sum of its proper divisors (4680190833).

12928957071 is a wasteful number, since it uses less digits than its factorization.

12928957071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19630.

The product of its (nonzero) digits is 635040, while the sum is 51.

The spelling of 12928957071 in words is "twelve billion, nine hundred twenty-eight million, nine hundred fifty-seven thousand, seventy-one".

Divisors: 1 3 47 141 7753 11827 23259 35481 364391 555869 1093173 1667607 91694731 275084193 4309652357 12928957071