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149708666880 = 2113351928499
BaseRepresentation
bin1000101101101101010…
…1001111100000000000
3112022102110021020222000
42023123111033200000
54423100404320010
6152435240144000
713546630446363
oct2133325174000
9468373236860
10149708666880
1158544704283
1225021168000
131116b0c74b6
147362bd60da
153d632337c0
hex22db54f800

149708666880 has 384 divisors, whose sum is σ = 560196000000. Its totient is φ = 37819809792.

The previous prime is 149708666813. The next prime is 149708666911. The reversal of 149708666880 is 88666807941.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5238871 + ... + 5267369.

It is an arithmetic number, because the mean of its divisors is an integer number (1458843750).

Almost surely, 2149708666880 is an apocalyptic number.

149708666880 is a gapful number since it is divisible by the number (10) 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 149708666880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280098000000).

149708666880 is an abundant number, since it is smaller than the sum of its proper divisors (410487333120).

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

149708666880 is a wasteful number, since it uses less digits than its factorization.

149708666880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28554 (or 28528 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The spelling of 149708666880 in words is "one hundred forty-nine billion, seven hundred eight million, six hundred sixty-six thousand, eight hundred eighty".