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85406754887 = 2331811167349
BaseRepresentation
bin100111110001010100…
…0111010100001000111
322011110010212200100222
41033202220322201013
52344403112124022
6103122455054555
76112313303246
oct1174250724107
9264403780328
1085406754887
1133247983053
121467667145b
13809132b76c
1441c2c7c95d
15234cec0242
hex13e2a3a847

85406754887 has 8 divisors (see below), whose sum is σ = 89148184800. Its totient is φ = 81667666080.

The previous prime is 85406754787. The next prime is 85406754893. The reversal of 85406754887 is 78845760458.

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 85406754887 - 210 = 85406753863 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 (85406754287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510512 + ... + 656837.

It is an arithmetic number, because the mean of its divisors is an integer number (11143523100).

Almost surely, 285406754887 is an apocalyptic number.

85406754887 is a deficient number, since it is larger than the sum of its proper divisors (3741429913).

85406754887 is a wasteful number, since it uses less digits than its factorization.

85406754887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170553.

The product of its (nonzero) digits is 60211200, while the sum is 62.

The spelling of 85406754887 in words is "eighty-five billion, four hundred six million, seven hundred fifty-four thousand, eight hundred eighty-seven".

Divisors: 1 23 3181 73163 1167349 26849027 3713337169 85406754887