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13957395680 = 25587233723
BaseRepresentation
bin11001111111110110…
…01111010011100000
31100000201022011102202
430333323033103200
5212041043130210
610224551232332
71002606622454
oct147773172340
940021264382
1013957395680
115a12649a58
1228563786a8
131415842b17
14965986664
1556a5199a5
hex33fecf4e0

13957395680 has 24 divisors (see below), whose sum is σ = 32974347672. Its totient is φ = 5582958208.

The previous prime is 13957395679. The next prime is 13957395721. The reversal of 13957395680 is 8659375931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43616702 + ... + 43617021.

It is an arithmetic number, because the mean of its divisors is an integer number (1373931153).

Almost surely, 213957395680 is an apocalyptic number.

13957395680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13957395680 is an abundant number, since it is smaller than the sum of its proper divisors (19016951992).

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

13957395680 is an equidigital number, since it uses as much as digits as its factorization.

13957395680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87233738 (or 87233730 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 56.

The spelling of 13957395680 in words is "thirteen billion, nine hundred fifty-seven million, three hundred ninety-five thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 87233723 174467446 348934892 436168615 697869784 872337230 1395739568 1744674460 2791479136 3489348920 6978697840 13957395680