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38042581213 = 7134371149919
BaseRepresentation
bin100011011011100000…
…111011100011011101
310122012020211100201101
4203123200323203131
51110402400044323
625250532313101
72514505414330
oct433340734335
9118166740641
1038042581213
111515205536a
127458472791
1337836968b0
141bac638617
15ec9c35dad
hex8db83b8dd

38042581213 has 64 divisors (see below), whose sum is σ = 48964608000. Its totient is φ = 28759691520.

The previous prime is 38042581193. The next prime is 38042581229. The reversal of 38042581213 is 31218524083.

It is not a de Polignac number, because 38042581213 - 233 = 29452646621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38042581013) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41395168 + ... + 41396086.

It is an arithmetic number, because the mean of its divisors is an integer number (765072000).

Almost surely, 238042581213 is an apocalyptic number.

It is an amenable number.

38042581213 is a deficient number, since it is larger than the sum of its proper divisors (10922026787).

38042581213 is a wasteful number, since it uses less digits than its factorization.

38042581213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 38042581213 in words is "thirty-eight billion, forty-two million, five hundred eighty-one thousand, two hundred thirteen".

Divisors: 1 7 13 43 71 91 149 301 497 559 919 923 1043 1937 3053 3913 6407 6433 6461 10579 11947 13559 21371 39517 39689 44849 65249 74053 83291 83629 136931 137527 276619 277823 454897 456743 513721 583037 848237 958517 962689 1780103 2805707 3184279 3596047 5888033 5913661 5937659 9722101 12460721 19639949 36474191 41216231 41395627 68054707 76544429 126387313 255319337 418050343 535811003 884711191 2926352401 5434654459 38042581213