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57254078678 = 2199907152083
BaseRepresentation
bin110101010100100110…
…111110100011010110
312110210010122112211112
4311110212332203112
51414224021004203
642145133335022
74064544432116
oct652446764326
9173703575745
1057254078678
11223104867a5
12b11a337472
1355258b5984
142ab1d09046
15175164b6d8
hexd549be8d6

57254078678 has 16 divisors (see below), whose sum is σ = 90410896320. Its totient is φ = 27117437256.

The previous prime is 57254078669. The next prime is 57254078681. The reversal of 57254078678 is 87687045275.

It is a super-2 number, since 2×572540786782 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300425 + ... + 452507.

It is an arithmetic number, because the mean of its divisors is an integer number (5650681020).

Almost surely, 257254078678 is an apocalyptic number.

57254078678 is a deficient number, since it is larger than the sum of its proper divisors (33156817642).

57254078678 is a wasteful number, since it uses less digits than its factorization.

57254078678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162011.

The product of its (nonzero) digits is 26342400, while the sum is 59.

The spelling of 57254078678 in words is "fifty-seven billion, two hundred fifty-four million, seventy-eight thousand, six hundred seventy-eight".

Divisors: 1 2 19 38 9907 19814 152083 188233 304166 376466 2889577 5779154 1506686281 3013372562 28627039339 57254078678