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12187423080 = 233357217192331
BaseRepresentation
bin10110101100110110…
…10101000101101000
31011110100210020111000
423112123111011220
5144424440014310
65333202435000
7611005246500
oct132633250550
934410706430
1012187423080
115194534388
122441662a60
1311c2c37361
14838888a00
154b4e434c0
hex2d66d5168

12187423080 has 1536 divisors, whose sum is σ = 56733696000. Its totient is φ = 2299207680.

The previous prime is 12187423037. The next prime is 12187423093. The reversal of 12187423080 is 8032478121.

12187423080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 393142665 + ... + 393142695.

It is an arithmetic number, because the mean of its divisors is an integer number (36936000).

Almost surely, 212187423080 is an apocalyptic number.

12187423080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12187423080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28366848000).

12187423080 is an abundant number, since it is smaller than the sum of its proper divisors (44546272920).

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

12187423080 is a wasteful number, since it uses less digits than its factorization.

12187423080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The spelling of 12187423080 in words is "twelve billion, one hundred eighty-seven million, four hundred twenty-three thousand, eighty".