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38387545037423 = 315696551332207
BaseRepresentation
bin10001011101001110010111…
…11111000101101001101111
312000220210222000102212122222
420232213023333011221233
520012420143012144143
6213350554510225555
711041260103024301
oct1056471377055157
9160823860385588
1038387545037423
111126008045998a
12437b91b1b52bb
131855c121934aa
14969d779bd971
15468834e98768
hex22e9cbfc5a6f

38387545037423 has 16 divisors (see below), whose sum is σ = 39701673123840. Its totient is φ = 37078176072000.

The previous prime is 38387545037407. The next prime is 38387545037447. The reversal of 38387545037423 is 32473054578383.

It is a cyclic number.

It is not a de Polignac number, because 38387545037423 - 24 = 38387545037407 is a prime.

It is a super-2 number, since 2×383875450374232 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38387545037483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115386986 + ... + 115719192.

It is an arithmetic number, because the mean of its divisors is an integer number (2481354570240).

Almost surely, 238387545037423 is an apocalyptic number.

38387545037423 is a deficient number, since it is larger than the sum of its proper divisors (1314128086417).

38387545037423 is a wasteful number, since it uses less digits than its factorization.

38387545037423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339358.

The product of its (nonzero) digits is 203212800, while the sum is 62.

The spelling of 38387545037423 in words is "thirty-eight trillion, three hundred eighty-seven billion, five hundred forty-five million, thirty-seven thousand, four hundred twenty-three".

Divisors: 1 31 569 6551 17639 203081 332207 3727519 10298417 115553089 189025783 2176288057 5859799273 67464929767 1238307904433 38387545037423