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12689751884 = 2210729648953
BaseRepresentation
bin10111101000101111…
…00011111101001100
31012202101000012001112
423310113203331030
5201442034030014
65455105231152
7626315053115
oct136427437514
935671005045
1012689751884
115422041457
1225619324b8
131273026434
1488548920c
154e40bb73e
hex2f45e3f4c

12689751884 has 12 divisors (see below), whose sum is σ = 22414609224. Its totient is φ = 6285577824.

The previous prime is 12689751883. The next prime is 12689751911. The reversal of 12689751884 is 48815798621.

It is a super-3 number, since 3×126897518843 (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (12689751883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14824049 + ... + 14824904.

It is an arithmetic number, because the mean of its divisors is an integer number (1867884102).

Almost surely, 212689751884 is an apocalyptic number.

It is an amenable number.

12689751884 is a deficient number, since it is larger than the sum of its proper divisors (9724857340).

12689751884 is a wasteful number, since it uses less digits than its factorization.

12689751884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29649064 (or 29649062 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 59.

The spelling of 12689751884 in words is "twelve billion, six hundred eighty-nine million, seven hundred fifty-one thousand, eight hundred eighty-four".

Divisors: 1 2 4 107 214 428 29648953 59297906 118595812 3172437971 6344875942 12689751884