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129070954792 = 23131453854141
BaseRepresentation
bin111100000110100111…
…0100111100100101000
3110100011011202212012001
41320031032213210220
54103314131023132
6135143330300344
712216333004513
oct1701516474450
9410134685161
10129070954792
114a81420977a
12210217276b4
13c22c57b940
146365d4bd7a
1535564eace7
hex1e0d3a7928

129070954792 has 32 divisors (see below), whose sum is σ = 260803718280. Its totient is φ = 59530141440.

The previous prime is 129070954777. The next prime is 129070954801. The reversal of 129070954792 is 297459070921.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 109967844996 + 19103109796 = 331614^2 + 138214^2 .

It is a super-2 number, since 2×1290709547922 (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275959 + ... + 578182.

Almost surely, 2129070954792 is an apocalyptic number.

It is an amenable number.

129070954792 is an abundant number, since it is smaller than the sum of its proper divisors (131732763488).

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

129070954792 is a wasteful number, since it uses less digits than its factorization.

129070954792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855613 (or 855609 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 55.

The spelling of 129070954792 in words is "one hundred twenty-nine billion, seventy million, nine hundred fifty-four thousand, seven hundred ninety-two".

Divisors: 1 2 4 8 13 26 52 104 1453 2906 5812 11624 18889 37778 75556 151112 854141 1708282 3416564 6833128 11103833 22207666 44415332 88830664 1241066873 2482133746 4964267492 9928534984 16133869349 32267738698 64535477396 129070954792