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53149900800 = 2133521929157
BaseRepresentation
bin110001011111111110…
…110010000000000000
312002012002220201012110
4301133332302000000
51332322333311200
640230002455320
73561050463003
oct613776620000
9162162821173
1053149900800
11205a4808157
12a373964540
135020519c59
142802bd753a
1515b1198b50
hexc5ffb2000

53149900800 has 672 divisors, whose sum is σ = 192585441600. Its totient is φ = 12881756160.

The previous prime is 53149900777. The next prime is 53149900813. The reversal of 53149900800 is 800994135.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 338534322 + ... + 338534478.

Almost surely, 253149900800 is an apocalyptic number.

53149900800 is a gapful number since it is divisible by the number (50) 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 53149900800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96292720800).

53149900800 is an abundant number, since it is smaller than the sum of its proper divisors (139435540800).

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

53149900800 is a wasteful number, since it uses less digits than its factorization.

53149900800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 53149900800 in words is "fifty-three billion, one hundred forty-nine million, nine hundred thousand, eight hundred".