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6438580001288 = 238971192
BaseRepresentation
bin101110110110001100101…
…0001100001101000001000
3211210112002201012001100122
41131230121101201220020
51320442202440020123
621405502014322412
71233113005005101
oct135543121415010
924715081161318
106438580001288
11206264a614836
1287ba0b4b9408
133792037bc266
141838b3b233a8
15b2737872bc8
hex5db19461a08

6438580001288 has 12 divisors (see below), whose sum is σ = 12072350959215. Its totient is φ = 3219286412168.

The previous prime is 6438580001281. The next prime is 6438580001299. The reversal of 6438580001288 is 8821000858346.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 3219290000644 + 3219290000644 = 1794238^2 + 1794238^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=1794238.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6438580001281) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6728393 + ... + 7625511.

Almost surely, 26438580001288 is an apocalyptic number.

It is an amenable number.

6438580001288 is a deficient number, since it is larger than the sum of its proper divisors (5633770957927).

6438580001288 is an frugal number, since it uses more digits than its factorization.

6438580001288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794244 (or 897121 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 53.

The spelling of 6438580001288 in words is "six trillion, four hundred thirty-eight billion, five hundred eighty million, one thousand, two hundred eighty-eight".

Divisors: 1 2 4 8 897119 1794238 3588476 7176952 804822500161 1609645000322 3219290000644 6438580001288