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12478208495 = 561157260587
BaseRepresentation
bin10111001111100001…
…00101100111101111
31012012121221200002012
423213300211213233
5201023410132440
65422111151435
7621136010414
oct134760454757
935177850065
1012478208495
115323694805
122502b1557b
13123b259c2c
1486534010b
154d0731e65
hex2e7c259ef

12478208495 has 16 divisors (see below), whose sum is σ = 15316320288. Its totient is φ = 9756339840.

The previous prime is 12478208489. The next prime is 12478208531. The reversal of 12478208495 is 59480287421.

It is not a de Polignac number, because 12478208495 - 212 = 12478204399 is a prime.

It is a Duffinian 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, 82409 + ... + 178178.

It is an arithmetic number, because the mean of its divisors is an integer number (957270018).

Almost surely, 212478208495 is an apocalyptic number.

12478208495 is a deficient number, since it is larger than the sum of its proper divisors (2838111793).

12478208495 is a wasteful number, since it uses less digits than its factorization.

12478208495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260810.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 12478208495 in words is "twelve billion, four hundred seventy-eight million, two hundred eight thousand, four hundred ninety-five".

Divisors: 1 5 61 157 305 785 9577 47885 260587 1302935 15895807 40912159 79479035 204560795 2495641699 12478208495