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17680675439 = 723111639681
BaseRepresentation
bin10000011101110110…
…011011001001101111
31200122012022101002002
4100131312123021233
5242202223103224
612042234122515
71164100155500
oct203566331157
950565271062
1017680675439
11755330a169
12351528043b
13188a02793b
14bda266ba7
156d732d9ae
hex41dd9b26f

17680675439 has 12 divisors (see below), whose sum is σ = 21230779968. Its totient is φ = 14665996800.

The previous prime is 17680675433. The next prime is 17680675477. The reversal of 17680675439 is 93457608671.

It is not a de Polignac number, because 17680675439 - 224 = 17663898223 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 (17680675433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5818322 + ... + 5821359.

It is an arithmetic number, because the mean of its divisors is an integer number (1769231664).

Almost surely, 217680675439 is an apocalyptic number.

17680675439 is a deficient number, since it is larger than the sum of its proper divisors (3550104529).

17680675439 is a wasteful number, since it uses less digits than its factorization.

17680675439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11639726 (or 11639719 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 17680675439 in words is "seventeen billion, six hundred eighty million, six hundred seventy-five thousand, four hundred thirty-nine".

Divisors: 1 7 31 49 217 1519 11639681 81477767 360830111 570344369 2525810777 17680675439