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83123870378725 = 5211733412371923
BaseRepresentation
bin10010111001100111001000…
…110001000010101011100101
3101220022120020110002112001201
4102321213020301002223211
541343400141304104400
6452442325012122501
723336333666201011
oct2271471061025345
9356276213075051
1083123870378725
11245386a9880840
1293a5b68006431
13374c7166858b7
141675306c45541
15992398d0206a
hex4b99c8c42ae5

83123870378725 has 24 divisors (see below), whose sum is σ = 112597329104352. Its totient is φ = 60371249380800.

The previous prime is 83123870378669. The next prime is 83123870378753. The reversal of 83123870378725 is 52787307832138.

It is not a de Polignac number, because 83123870378725 - 27 = 83123870378597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 205984387 + ... + 206387536.

It is an arithmetic number, because the mean of its divisors is an integer number (4691555379348).

Almost surely, 283123870378725 is an apocalyptic number.

It is an amenable number.

83123870378725 is a deficient number, since it is larger than the sum of its proper divisors (29473458725627).

83123870378725 is a wasteful number, since it uses less digits than its factorization.

83123870378725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412372677 (or 412372672 counting only the distinct ones).

The product of its (nonzero) digits is 94832640, while the sum is 64.

The spelling of 83123870378725 in words is "eighty-three trillion, one hundred twenty-three billion, eight hundred seventy million, three hundred seventy-eight thousand, seven hundred twenty-five".

Divisors: 1 5 11 25 55 275 733 3665 8063 18325 40315 201575 412371923 2061859615 4536091153 10309298075 22680455765 113402278825 302268619559 1511343097795 3324954815149 7556715488975 16624774075745 83123870378725