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26400868061 = 277311306463
BaseRepresentation
bin11000100101100111…
…010100011011011101
32112010220220001112012
4120211213110123131
5413032110234221
620043422121005
71623144450551
oct304547243335
975126801465
1026400868061
1110218668a27
125149720165
13264982a129
1413c6443861
15a47b8965b
hex6259d46dd

26400868061 has 8 divisors (see below), whose sum is σ = 26581461504. Its totient is φ = 26220888720.

The previous prime is 26400867943. The next prime is 26400868093. The reversal of 26400868061 is 16086800462.

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 26400868061 - 214 = 26400851677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26400868261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67085 + ... + 239378.

It is an arithmetic number, because the mean of its divisors is an integer number (3322682688).

Almost surely, 226400868061 is an apocalyptic number.

It is an amenable number.

26400868061 is a deficient number, since it is larger than the sum of its proper divisors (180593443).

26400868061 is a wasteful number, since it uses less digits than its factorization.

26400868061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307051.

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 26400868061 in words is "twenty-six billion, four hundred million, eight hundred sixty-eight thousand, sixty-one".

Divisors: 1 277 311 86147 306463 84890251 95309993 26400868061