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12654788461 = 73283130369
BaseRepresentation
bin10111100100100100…
…01011111101101101
31012122221012212020221
423302102023331231
5201404111212321
65451420011341
7625411633000
oct136222137555
935587185227
1012654788461
115404330967
122552090b51
131268a04213
14880987537
154e0eb1e41
hex2f248bf6d

12654788461 has 16 divisors (see below), whose sum is σ = 14810032000. Its totient is φ = 10808550144.

The previous prime is 12654788353. The next prime is 12654788483. The reversal of 12654788461 is 16488745621.

It is not a de Polignac number, because 12654788461 - 215 = 12654755693 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12654788399 and 12654788408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12654788161) 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, 31885 + ... + 162253.

It is an arithmetic number, because the mean of its divisors is an integer number (925627000).

Almost surely, 212654788461 is an apocalyptic number.

It is an amenable number.

12654788461 is a deficient number, since it is larger than the sum of its proper divisors (2155243539).

12654788461 is an equidigital number, since it uses as much as digits as its factorization.

12654788461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130673 (or 130659 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 52.

The spelling of 12654788461 in words is "twelve billion, six hundred fifty-four million, seven hundred eighty-eight thousand, four hundred sixty-one".

Divisors: 1 7 49 283 343 1981 13867 97069 130369 912583 6388081 36894427 44716567 258260989 1807826923 12654788461