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12767496380 = 225638374819
BaseRepresentation
bin10111110010000000…
…01000100010111100
31012221210022000110022
423321000020202330
5202121434341010
65510523431312
7631250633342
oct137100104274
935853260408
1012767496380
115461a12001
122583985538
131286176cb2
14891925992
154ead26d55
hex2f90088bc

12767496380 has 12 divisors (see below), whose sum is σ = 26811742440. Its totient is φ = 5106998544.

The previous prime is 12767496377. The next prime is 12767496419. The reversal of 12767496380 is 8369476721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319187390 + ... + 319187429.

It is an arithmetic number, because the mean of its divisors is an integer number (2234311870).

Almost surely, 212767496380 is an apocalyptic number.

12767496380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12767496380 is an abundant number, since it is smaller than the sum of its proper divisors (14044246060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12767496380 is a wasteful number, since it uses less digits than its factorization.

12767496380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638374828 (or 638374826 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 12767496380 in words is "twelve billion, seven hundred sixty-seven million, four hundred ninety-six thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 638374819 1276749638 2553499276 3191874095 6383748190 12767496380