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1298992555080 = 2332511767342751
BaseRepresentation
bin10010111001110001111…
…111010110010001001000
311121011221000122221121100
4102321301333112101020
5132240314043230310
62432425434341400
7162564150352233
oct22716177262110
94534830587540
101298992555080
11460999483990
1218b905b8a860
139565748169c
1446c2b86041a
1523bca772ec0
hex12e71fd6448

1298992555080 has 192 divisors, whose sum is σ = 4606227025920. Its totient is φ = 314858880000.

The previous prime is 1298992555067. The next prime is 1298992555097. The reversal of 1298992555080 is 805552998921.

1298992555080 is a `hidden beast` number, since 1 + 29 + 89 + 9 + 25 + 5 + 508 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1298992554999 and 1298992555017.

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, 30363705 + ... + 30406455.

It is an arithmetic number, because the mean of its divisors is an integer number (23990765760).

Almost surely, 21298992555080 is an apocalyptic number.

1298992555080 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 1298992555080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2303113512960).

1298992555080 is an abundant number, since it is smaller than the sum of its proper divisors (3307234470840).

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

1298992555080 is a wasteful number, since it uses less digits than its factorization.

1298992555080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50452 (or 50445 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 63.

The spelling of 1298992555080 in words is "one trillion, two hundred ninety-eight billion, nine hundred ninety-two million, five hundred fifty-five thousand, eighty".