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12495140886 = 2319229478631
BaseRepresentation
bin10111010001100010…
…01011100000010110
31012020210210220221210
423220301023200112
5201042224002021
65423514122250
7621432642114
oct135061134026
935223726853
1012495140886
1153321aa318
122508720386
131241907cb7
148676aaab4
154d1e78e76
hex2e8c4b816

12495140886 has 32 divisors (see below), whose sum is σ = 26420486400. Its totient is φ = 3928595040.

The previous prime is 12495140881. The next prime is 12495140893. The reversal of 12495140886 is 68804159421.

It is a super-2 number, since 2×124951408862 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12495140881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213210 + ... + 265421.

It is an arithmetic number, because the mean of its divisors is an integer number (825640200).

Almost surely, 212495140886 is an apocalyptic number.

12495140886 is an abundant number, since it is smaller than the sum of its proper divisors (13925345514).

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

12495140886 is a wasteful number, since it uses less digits than its factorization.

12495140886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478884.

The product of its (nonzero) digits is 552960, while the sum is 48.

The spelling of 12495140886 in words is "twelve billion, four hundred ninety-five million, one hundred forty thousand, eight hundred eighty-six".

Divisors: 1 2 3 6 19 38 57 114 229 458 687 1374 4351 8702 13053 26106 478631 957262 1435893 2871786 9093989 18187978 27281967 54563934 109606499 219212998 328819497 657638994 2082523481 4165046962 6247570443 12495140886