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26319487441 = 137013288689
BaseRepresentation
bin11000100000110000…
…111000000111010001
32111221020202111022011
4120200300320013101
5412400242044231
620031353542521
71621135644352
oct304060700721
974836674264
1026319487441
1110186734515
125126414a41
132635a05510
1413b96dbd29
15a409619b1
hex620c381d1

26319487441 has 8 divisors (see below), whose sum is σ = 28348203240. Its totient is φ = 24291363072.

The previous prime is 26319487421. The next prime is 26319487471. The reversal of 26319487441 is 14478491362.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4909945041 + 21409542400 = 70071^2 + 146320^2 .

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 26319487441 - 215 = 26319454673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26319487421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53176 + ... + 235513.

It is an arithmetic number, because the mean of its divisors is an integer number (3543525405).

Almost surely, 226319487441 is an apocalyptic number.

It is an amenable number.

26319487441 is a deficient number, since it is larger than the sum of its proper divisors (2028715799).

26319487441 is a wasteful number, since it uses less digits than its factorization.

26319487441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295715.

The product of its digits is 1161216, while the sum is 49.

The spelling of 26319487441 in words is "twenty-six billion, three hundred nineteen million, four hundred eighty-seven thousand, four hundred forty-one".

Divisors: 1 13 7013 91169 288689 3752957 2024575957 26319487441