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12500012615 = 522291112153
BaseRepresentation
bin10111010010000111…
…10000111001000111
31012021010222102201012
423221003300321013
5201100000400430
65424210352435
7621522232316
oct135103607107
935233872635
1012500012615
115334a27542
12250a28b71b
13124292258c
148681b827d
154d25dc695
hex2e90f0e47

12500012615 has 8 divisors (see below), whose sum is σ = 15000821808. Its totient is φ = 9999472320.

The previous prime is 12500012557. The next prime is 12500012621. The reversal of 12500012615 is 51621000521.

It is a happy number.

12500012615 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-12500012615 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 55379 + ... + 167531.

It is an arithmetic number, because the mean of its divisors is an integer number (1875102726).

Almost surely, 212500012615 is an apocalyptic number.

12500012615 is a deficient number, since it is larger than the sum of its proper divisors (2500809193).

12500012615 is a wasteful number, since it uses less digits than its factorization.

12500012615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134449.

The product of its (nonzero) digits is 600, while the sum is 23.

The spelling of 12500012615 in words is "twelve billion, five hundred million, twelve thousand, six hundred fifteen".

Divisors: 1 5 22291 111455 112153 560765 2500002523 12500012615