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55071618048 = 21032172232931
BaseRepresentation
bin110011010010100001…
…100011010000000000
312021011000222001200100
4303102201203100000
51400241313234143
641144411522400
73656504013126
oct632241432000
9167130861610
1055071618048
11213a0546827
12a80b459400
1352686b5755
142946115916
151674c466d3
hexcd2863400

55071618048 has 792 divisors, whose sum is σ = 188227054080. Its totient is φ = 15441592320.

The previous prime is 55071618037. The next prime is 55071618067. The reversal of 55071618048 is 84081617055.

55071618048 is a `hidden beast` number, since 5 + 507 + 1 + 61 + 80 + 4 + 8 = 666.

It is a super-2 number, since 2×550716180482 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55071617994 and 55071618012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1776503793 + ... + 1776503823.

Almost surely, 255071618048 is an apocalyptic number.

55071618048 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55071618048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94113527040).

55071618048 is an abundant number, since it is smaller than the sum of its proper divisors (133155436032).

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

55071618048 is a wasteful number, since it uses less digits than its factorization.

55071618048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 45.

The spelling of 55071618048 in words is "fifty-five billion, seventy-one million, six hundred eighteen thousand, forty-eight".