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12503102030 = 251773547659
BaseRepresentation
bin10111010010011111…
…00011001001001110
31012021100210101120222
423221033203021032
5201101243231110
65424400511342
7621560420336
oct135117431116
935240711528
1012503102030
115336747681
12250b31b552
131243464833
148687800c6
154d29ecc55
hex2e93e324e

12503102030 has 16 divisors (see below), whose sum is σ = 23829441840. Its totient is φ = 4707050112.

The previous prime is 12503101973. The next prime is 12503102039. The reversal of 12503102030 is 3020130521.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12503102039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36773660 + ... + 36773999.

It is an arithmetic number, because the mean of its divisors is an integer number (1489340115).

Almost surely, 212503102030 is an apocalyptic number.

12503102030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12503102030 is a deficient number, since it is larger than the sum of its proper divisors (11326339810).

12503102030 is a wasteful number, since it uses less digits than its factorization.

12503102030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73547683.

The product of its (nonzero) digits is 180, while the sum is 17.

Adding to 12503102030 its reverse (3020130521), we get a palindrome (15523232551).

The spelling of 12503102030 in words is "twelve billion, five hundred three million, one hundred two thousand, thirty".

Divisors: 1 2 5 10 17 34 85 170 73547659 147095318 367738295 735476590 1250310203 2500620406 6251551015 12503102030