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13887202357 = 72283412293
BaseRepresentation
bin11001110111011110…
…11110010000110101
31022211211012222022001
430323233132100311
5211420110433412
610214002535301
71001065162300
oct147357362065
938754188261
1013887202357
115986a66746
122836967531
131404137302
1495a513b37
155642a1957
hex33bbde435

13887202357 has 6 divisors (see below), whose sum is σ = 16154500758. Its totient is φ = 11903316264.

The previous prime is 13887202337. The next prime is 13887202367. The reversal of 13887202357 is 75320278831.

It can be written as a sum of positive squares in only one way, i.e., 12736025316 + 1151177041 = 112854^2 + 33929^2 .

It is not a de Polignac number, because 13887202357 - 231 = 11739718709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13887202327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141706098 + ... + 141706195.

It is an arithmetic number, because the mean of its divisors is an integer number (2692416793).

Almost surely, 213887202357 is an apocalyptic number.

It is an amenable number.

13887202357 is a deficient number, since it is larger than the sum of its proper divisors (2267298401).

13887202357 is an equidigital number, since it uses as much as digits as its factorization.

13887202357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283412307 (or 283412300 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 13887202357 in words is "thirteen billion, eight hundred eighty-seven million, two hundred two thousand, three hundred fifty-seven".

Divisors: 1 7 49 283412293 1983886051 13887202357