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85312530379 = 315235261983
BaseRepresentation
bin100111101110100000…
…1011110011111001011
322011012120120120122101
41033131001132133023
52344210001433004
6103105251334231
76110060354236
oct1173501363713
9264176516571
1085312530379
11331a977685a
121464abb1377
13807795aa0b
1441b455241d
152344aabba4
hex13dd05e7cb

85312530379 has 8 divisors (see below), whose sum is σ = 88232947712. Its totient is φ = 82402638120.

The previous prime is 85312530377. The next prime is 85312530409. The reversal of 85312530379 is 97303521358.

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 85312530379 - 21 = 85312530377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85312530371) 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, 2614779 + ... + 2647204.

It is an arithmetic number, because the mean of its divisors is an integer number (11029118464).

Almost surely, 285312530379 is an apocalyptic number.

85312530379 is a deficient number, since it is larger than the sum of its proper divisors (2920417333).

85312530379 is a wasteful number, since it uses less digits than its factorization.

85312530379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5262537.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 85312530379 in words is "eighty-five billion, three hundred twelve million, five hundred thirty thousand, three hundred seventy-nine".

Divisors: 1 31 523 16213 5261983 163121473 2752017109 85312530379