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87201212499998 = 2193225909876943
BaseRepresentation
bin10011110100111100011101…
…010010111000100000011110
3102102202100120102122001210222
4103310330131102320200132
542412201040344444443
6505243403424201342
724240036223324142
oct2364743522704036
9372670512561728
1087201212499998
112586a9101418a3
129944219769252
133987067a5991c
1417767bdd33222
15a13484c66468
hex4f4f1d4b881e

87201212499998 has 8 divisors (see below), whose sum is σ = 131479548381408. Its totient is φ = 43374696372864.

The previous prime is 87201212499971. The next prime is 87201212500009. The reversal of 87201212499998 is 89999421210278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×872012124999982 (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112954938086 + ... + 112954938857.

It is an arithmetic number, because the mean of its divisors is an integer number (16434943547676).

Almost surely, 287201212499998 is an apocalyptic number.

87201212499998 is a deficient number, since it is larger than the sum of its proper divisors (44278335881410).

87201212499998 is a wasteful number, since it uses less digits than its factorization.

87201212499998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225909877138.

The product of its (nonzero) digits is 94058496, while the sum is 71.

The spelling of 87201212499998 in words is "eighty-seven trillion, two hundred one billion, two hundred twelve million, four hundred ninety-nine thousand, nine hundred ninety-eight".

Divisors: 1 2 193 386 225909876943 451819753886 43600606249999 87201212499998