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26531130144 = 253276365939
BaseRepresentation
bin11000101101011000…
…001110101100100000
32112111000000001111210
4120231120032230200
5413313432131034
620104354110120
71626315612441
oct305530165440
975430001453
1026531130144
1110285149842
12518527b340
13266a807c9c
1413d98712c8
15a5431a8e9
hex62d60eb20

26531130144 has 24 divisors (see below), whose sum is σ = 69644216880. Its totient is φ = 8843710016.

The previous prime is 26531130137. The next prime is 26531130167. The reversal of 26531130144 is 44103113562.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138182874 + ... + 138183065.

It is an arithmetic number, because the mean of its divisors is an integer number (2901842370).

Almost surely, 226531130144 is an apocalyptic number.

26531130144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26531130144 is an abundant number, since it is smaller than the sum of its proper divisors (43113086736).

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

26531130144 is a wasteful number, since it uses less digits than its factorization.

26531130144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276365952 (or 276365944 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 26531130144 in words is "twenty-six billion, five hundred thirty-one million, one hundred thirty thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 276365939 552731878 829097817 1105463756 1658195634 2210927512 3316391268 4421855024 6632782536 8843710048 13265565072 26531130144