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80642076672000 = 2153533126829
BaseRepresentation
bin10010010101011111110010…
…010101011000000000000000
3101120112022021222101111001110
4102111133302111120000000
541032214433112001000
6443302243020003320
722662124556563434
oct2225376225300000
9346468258344043
1080642076672000
1123771126a46128
129064b84390540
1335cc690b8297c
1415cb15113c9c4
1594ca43748850
hex4957f2558000

80642076672000 has 768 divisors, whose sum is σ = 277349792709600. Its totient is φ = 20807811072000.

The previous prime is 80642076671951. The next prime is 80642076672011. The reversal of 80642076672000 is 27667024608.

It is a tau number, because it is divible by the number of its divisors (768).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 11808764586 + ... + 11808771414.

Almost surely, 280642076672000 is an apocalyptic number.

80642076672000 is a gapful number since it is divisible by the number (80) 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 80642076672000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138674896354800).

80642076672000 is an abundant number, since it is smaller than the sum of its proper divisors (196707716037600).

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

80642076672000 is an frugal number, since it uses more digits than its factorization.

80642076672000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6939 (or 6870 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 48.

The spelling of 80642076672000 in words is "eighty trillion, six hundred forty-two billion, seventy-six million, six hundred seventy-two thousand".