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88542000891 = 3246757210407
BaseRepresentation
bin101001001110110000…
…0111011011011111011
322110112122101200100100
41102131200323123323
52422313223012031
6104401534210443
76253103406201
oct1223540733373
9273478350310
1088542000891
1134606718853
12151b0653a23
138470a47506
1443dd40d071
15248337bde6
hex149d83b6fb

88542000891 has 12 divisors (see below), whose sum is σ = 127897344432. Its totient is φ = 59026457616.

The previous prime is 88542000889. The next prime is 88542000941. The reversal of 88542000891 is 19800024588.

It is a happy number.

88542000891 is a nontrivial binomial coefficient, being equal to C(420814, 2).

It is not a de Polignac number, because 88542000891 - 21 = 88542000889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (88542000821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315610 + ... + 526016.

It is an arithmetic number, because the mean of its divisors is an integer number (10658112036).

Almost surely, 288542000891 is an apocalyptic number.

88542000891 is the 420813-rd triangular number and also the 210407-th hexagonal number.

88542000891 is a deficient number, since it is larger than the sum of its proper divisors (39355343541).

88542000891 is a wasteful number, since it uses less digits than its factorization.

88542000891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257170 (or 257167 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The spelling of 88542000891 in words is "eighty-eight billion, five hundred forty-two million, eight hundred ninety-one", and thus it is an aban number.

Divisors: 1 3 9 46757 140271 210407 420813 631221 1893663 9838000099 29514000297 88542000891