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388532888885 = 51914669278807
BaseRepresentation
bin1011010011101100101…
…11010110010100110101
31101010212112011202202202
411221312113112110311
522331203404421020
6454253424114245
740033131031121
oct5516627262465
91333775152682
10388532888885
1113a859761069
1263372a65985
132a83ba057ab
1414b3b25c581
15a18ed3ae75
hex5a765d6535

388532888885 has 16 divisors (see below), whose sum is σ = 490813603200. Its totient is φ = 294445901376.

The previous prime is 388532888879. The next prime is 388532888911. The reversal of 388532888885 is 588888235883.

It is a de Polignac number, because none of the positive numbers 2k-388532888885 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1254152 + ... + 1532958.

It is an arithmetic number, because the mean of its divisors is an integer number (30675850200).

Almost surely, 2388532888885 is an apocalyptic number.

It is an amenable number.

388532888885 is a deficient number, since it is larger than the sum of its proper divisors (102280714315).

388532888885 is a wasteful number, since it uses less digits than its factorization.

388532888885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293500.

The product of its digits is 943718400, while the sum is 74.

The spelling of 388532888885 in words is "three hundred eighty-eight billion, five hundred thirty-two million, eight hundred eighty-eight thousand, eight hundred eighty-five".

Divisors: 1 5 19 95 14669 73345 278711 278807 1393555 1394035 5297333 26486665 4089819883 20449099415 77706577777 388532888885