Search a number
-
+
85807088641 = 791831593209
BaseRepresentation
bin100111111101010000…
…0000100010000000001
322012111001011202001001
41033322200010100001
52401213103314031
6103230315412001
76125244135121
oct1177240042001
9265431152031
1085807088641
113343295679a
1214768754001
138126258c41
1442200ccc81
1523731ec861
hex13fa804401

85807088641 has 8 divisors (see below), whose sum is σ = 86940857600. Its totient is φ = 84674509920.

The previous prime is 85807088573. The next prime is 85807088657. The reversal of 85807088641 is 14688070858.

It is a happy number.

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 85807088641 - 27 = 85807088513 is a prime.

It is a super-2 number, since 2×858070886412 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85807188641) 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, 151956 + ... + 441253.

It is an arithmetic number, because the mean of its divisors is an integer number (10867607200).

Almost surely, 285807088641 is an apocalyptic number.

It is an amenable number.

85807088641 is a deficient number, since it is larger than the sum of its proper divisors (1133768959).

85807088641 is a wasteful number, since it uses less digits than its factorization.

85807088641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595119.

The product of its (nonzero) digits is 3440640, while the sum is 55.

The spelling of 85807088641 in words is "eighty-five billion, eight hundred seven million, eighty-eight thousand, six hundred forty-one".

Divisors: 1 79 1831 144649 593209 46863511 1086165679 85807088641