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38901267997648 = 2471324926215771
BaseRepresentation
bin10001101100001011010000…
…10000101010001111010000
312002201220222020211012100121
420312011220100222033100
520044324244101411043
6214422555032200024
711123344454111230
oct1066055020521720
9162656866735317
1038901267997648
1111438a316a3521
1244433abb39014
1318924b2400c74
14986b8d5a1cc0
15476da0738ded
hex23616842a3d0

38901267997648 has 40 divisors (see below), whose sum is σ = 86145026792000. Its totient is φ = 16670713006080.

The previous prime is 38901267997639. The next prime is 38901267997681. The reversal of 38901267997648 is 84679976210983.

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, 11623998 + ... + 14591773.

It is an arithmetic number, because the mean of its divisors is an integer number (2153625669800).

Almost surely, 238901267997648 is an apocalyptic number.

It is an amenable number.

38901267997648 is an abundant number, since it is smaller than the sum of its proper divisors (47243758794352).

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

38901267997648 is a wasteful number, since it uses less digits than its factorization.

38901267997648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26229035 (or 26229029 counting only the distinct ones).

The product of its (nonzero) digits is 1975228416, while the sum is 79.

The spelling of 38901267997648 in words is "thirty-eight trillion, nine hundred one billion, two hundred sixty-seven million, nine hundred ninety-seven thousand, six hundred forty-eight".

Divisors: 1 2 4 7 8 14 16 28 56 112 13249 26498 52996 92743 105992 185486 211984 370972 741944 1483888 26215771 52431542 104863084 183510397 209726168 367020794 419452336 734041588 1468083176 2936166352 347332749979 694665499958 1389330999916 2431329249853 2778661999832 4862658499706 5557323999664 9725316999412 19450633998824 38901267997648