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69878999987896 = 2311794079545317
BaseRepresentation
bin11111110001101111110001…
…11110001011011010111000
3100011102100220122202021120211
433320313320332023122320
533124344142444103041
6404341545221200504
720501406522346321
oct1770677076133270
9304370818667524
1069878999987896
11202a157682a120
127a07027860134
132ccb73b5a9ac8
1413382397ab448
15812aa6d5a481
hex3f8df8f8b6b8

69878999987896 has 16 divisors (see below), whose sum is σ = 142934318157240. Its totient is φ = 31763181812640.

The previous prime is 69878999987869. The next prime is 69878999987899.

It is a happy number.

69878999987896 is nontrivially palindromic in base 10.

69878999987896 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69878999987899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397039772571 + ... + 397039772746.

Almost surely, 269878999987896 is an apocalyptic number.

It is an amenable number.

69878999987896 is an abundant number, since it is smaller than the sum of its proper divisors (73055318169344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69878999987896 is a wasteful number, since it uses less digits than its factorization.

69878999987896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794079545334 (or 794079545330 counting only the distinct ones).

The product of its digits is 3839844040704, while the sum is 112.

The spelling of 69878999987896 in words is "sixty-nine trillion, eight hundred seventy-eight billion, nine hundred ninety-nine million, nine hundred eighty-seven thousand, eight hundred ninety-six".