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687630159038 = 21961464963809
BaseRepresentation
bin10100000000110011111…
…00111000110010111110
32102201220010110100222002
422000121330320302332
542231231310042123
61243520512422302
7100452054625154
oct12003174706276
92381803410862
10687630159038
11245693331039
12b1325b47992
134cac67c3314
14253d25333d4
1512d4812e528
hexa019f38cbe

687630159038 has 32 divisors (see below), whose sum is σ = 1103785380000. Its totient is φ = 320305950720.

The previous prime is 687630159001. The next prime is 687630159059. The reversal of 687630159038 is 830951036786.

687630159038 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10744478 + ... + 10808286.

It is an arithmetic number, because the mean of its divisors is an integer number (34493293125).

Almost surely, 2687630159038 is an apocalyptic number.

687630159038 is a deficient number, since it is larger than the sum of its proper divisors (416155220962).

687630159038 is a wasteful number, since it uses less digits than its factorization.

687630159038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68540.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 687630159038 in words is "six hundred eighty-seven billion, six hundred thirty million, one hundred fifty-nine thousand, thirty-eight".

Divisors: 1 2 19 38 61 122 1159 2318 4649 9298 63809 88331 127618 176662 283589 567178 1212371 2424742 3892349 5388191 7784698 10776382 73954631 147909262 296648041 593296082 5636312779 11272625558 18095530501 36191061002 343815079519 687630159038