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12513188976 = 243260691437
BaseRepresentation
bin10111010011101100…
…00001110001110000
31012022001202212021120
423221312001301300
5201111334021401
65425401022240
7622042231341
oct135166016160
935261685246
1012513188976
1153414070a2
122512784980
131245586b42
14869c480c8
154d3841836
hex2e9d81c70

12513188976 has 20 divisors (see below), whose sum is σ = 32325738312. Its totient is φ = 4171062976.

The previous prime is 12513188953. The next prime is 12513188977. The reversal of 12513188976 is 67988131521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12513188977) 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, 130345671 + ... + 130345766.

Almost surely, 212513188976 is an apocalyptic number.

12513188976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12513188976 is an abundant number, since it is smaller than the sum of its proper divisors (19812549336).

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

12513188976 is a wasteful number, since it uses less digits than its factorization.

12513188976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260691448 (or 260691442 counting only the distinct ones).

The product of its digits is 725760, while the sum is 51.

The spelling of 12513188976 in words is "twelve billion, five hundred thirteen million, one hundred eighty-eight thousand, nine hundred seventy-six".

Divisors: 1 2 3 4 6 8 12 16 24 48 260691437 521382874 782074311 1042765748 1564148622 2085531496 3128297244 4171062992 6256594488 12513188976