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6989137920000 = 2143354171487
BaseRepresentation
bin110010110110100100100…
…0101010100000000000000
3220202011012001001010211000
41211231021011110000000
51404002223301420000
622510433213252000
71320643232052405
oct145551105240000
926664161033730
106989137920000
112255093170925
1294a660194000
133b90c4160662
141a23c17c82ac
15c1c0bd05000
hex65b49154000

6989137920000 has 1200 divisors, whose sum is σ = 27417202686720. Its totient is φ = 1752956928000.

The previous prime is 6989137919977. The next prime is 6989137920049. The reversal of 6989137920000 is 297319896.

6989137920000 is a `hidden beast` number, since 69 + 8 + 9 + 1 + 379 + 200 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1200).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4700159257 + ... + 4700160743.

Almost surely, 26989137920000 is an apocalyptic number.

6989137920000 is a gapful number since it is divisible by the number (60) 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 6989137920000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13708601343360).

6989137920000 is an abundant number, since it is smaller than the sum of its proper divisors (20428064766720).

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

6989137920000 is an equidigital number, since it uses as much as digits as its factorization.

6989137920000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561 (or 1514 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The spelling of 6989137920000 in words is "six trillion, nine hundred eighty-nine billion, one hundred thirty-seven million, nine hundred twenty thousand".