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57693965780 = 22511262245299
BaseRepresentation
bin110101101110110101…
…000000110111010100
312111220210101010111102
4311232311000313110
51421124123401110
642300525525232
74111465421603
oct655665006724
9174823333442
1057693965780
1122516815460
12b221713818
135595a815b9
142b144d3a3a
15177a08d5a5
hexd6ed40dd4

57693965780 has 24 divisors (see below), whose sum is σ = 132171631200. Its totient is φ = 20979623840.

The previous prime is 57693965759. The next prime is 57693965803. The reversal of 57693965780 is 8756939675.

It is a super-2 number, since 2×576939657802 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131122430 + ... + 131122869.

It is an arithmetic number, because the mean of its divisors is an integer number (5507151300).

Almost surely, 257693965780 is an apocalyptic number.

It is an amenable number.

57693965780 is an abundant number, since it is smaller than the sum of its proper divisors (74477665420).

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

57693965780 is a wasteful number, since it uses less digits than its factorization.

57693965780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262245319 (or 262245317 counting only the distinct ones).

The product of its (nonzero) digits is 85730400, while the sum is 65.

The spelling of 57693965780 in words is "fifty-seven billion, six hundred ninety-three million, nine hundred sixty-five thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 262245299 524490598 1048981196 1311226495 2622452990 2884698289 5244905980 5769396578 11538793156 14423491445 28846982890 57693965780