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12530212051 = 713991279507
BaseRepresentation
bin10111010101101101…
…11101110011010011
31012100020210201112211
423222312331303103
5201130213241201
65431205532551
7622340021320
oct135266756323
935306721484
1012530212051
11534aa83855
122518414157
131248c67276
1486c1d9b47
154d50a5651
hex2eadbdcd3

12530212051 has 8 divisors (see below), whose sum is σ = 14330489600. Its totient is φ = 10732496328.

The previous prime is 12530212043. The next prime is 12530212063. The reversal of 12530212051 is 15021203521.

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

It is a cyclic number.

It is not a de Polignac number, because 12530212051 - 23 = 12530212043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12530212351) 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, 629961 + ... + 649546.

It is an arithmetic number, because the mean of its divisors is an integer number (1791311200).

Almost surely, 212530212051 is an apocalyptic number.

12530212051 is a deficient number, since it is larger than the sum of its proper divisors (1800277549).

12530212051 is a wasteful number, since it uses less digits than its factorization.

12530212051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280913.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 12530212051 its reverse (15021203521), we get a palindrome (27551415572).

The spelling of 12530212051 in words is "twelve billion, five hundred thirty million, two hundred twelve thousand, fifty-one".

Divisors: 1 7 1399 9793 1279507 8956549 1790030293 12530212051