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12508006051 = 82183152197
BaseRepresentation
bin10111010011000100…
…10000011010100011
31012021201000112122101
423221202100122203
5201104022143201
65425053551231
7621650203642
oct135142203243
935251015571
1012508006051
115339497092
122510aa5517
131244490a18
14869299359
154d316ad01
hex2e98906a3

12508006051 has 4 divisors (see below), whose sum is σ = 12508240432. Its totient is φ = 12507771672.

The previous prime is 12508006039. The next prime is 12508006081. The reversal of 12508006051 is 15060080521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15060080521 = 63892357189.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12508006051 is a prime.

It is a super-2 number, since 2×125080060512 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12508006031) 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, 6085 + ... + 158281.

It is an arithmetic number, because the mean of its divisors is an integer number (3127060108).

Almost surely, 212508006051 is an apocalyptic number.

12508006051 is a deficient number, since it is larger than the sum of its proper divisors (234381).

12508006051 is an equidigital number, since it uses as much as digits as its factorization.

12508006051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234380.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 12508006051 its reverse (15060080521), we get a palindrome (27568086572).

The spelling of 12508006051 in words is "twelve billion, five hundred eight million, six thousand, fifty-one".

Divisors: 1 82183 152197 12508006051