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54912897613 = 7149499105509
BaseRepresentation
bin110011001001000100…
…000101001001001101
312020201222022020011201
4303021010011021031
51344430200210423
641120541545501
73652535633260
oct631104051115
9166658266151
1054912897613
1121319998812
12a786275291
135241852532
14292cddacd7
151665d432ad
hexcc910524d

54912897613 has 16 divisors (see below), whose sum is σ = 63306000000. Its totient is φ = 46658169792.

The previous prime is 54912897607. The next prime is 54912897619. The reversal of 54912897613 is 31679821945.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (54912897607) and next prime (54912897619).

It is a cyclic number.

It is not a de Polignac number, because 54912897613 - 233 = 46322963021 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 (54912897619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467703 + ... + 573211.

It is an arithmetic number, because the mean of its divisors is an integer number (3956625000).

Almost surely, 254912897613 is an apocalyptic number.

It is an amenable number.

54912897613 is a deficient number, since it is larger than the sum of its proper divisors (8393102387).

54912897613 is a wasteful number, since it uses less digits than its factorization.

54912897613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106164.

The product of its digits is 3265920, while the sum is 55.

The spelling of 54912897613 in words is "fifty-four billion, nine hundred twelve million, eight hundred ninety-seven thousand, six hundred thirteen".

Divisors: 1 7 149 499 1043 3493 74351 105509 520457 738563 15720841 52648991 110045887 368542937 7844699659 54912897613