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7807680043 = 65311956631
BaseRepresentation
bin1110100010101111…
…11011111000101011
3202011010112020111221
413101113323320223
5111442231230133
63330425402511
7364324120402
oct72127737053
922133466457
107807680043
113347260639
12161a939437
13975747727
14540d24639
1530a6aba2d
hex1d15fbe2b

7807680043 has 4 divisors (see below), whose sum is σ = 7819637328. Its totient is φ = 7795722760.

The previous prime is 7807680037. The next prime is 7807680131. The reversal of 7807680043 is 3400867087.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3400867087 = 12726778481.

It is a cyclic number.

It is not a de Polignac number, because 7807680043 - 25 = 7807680011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7807680343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5977663 + ... + 5978968.

It is an arithmetic number, because the mean of its divisors is an integer number (1954909332).

Almost surely, 27807680043 is an apocalyptic number.

7807680043 is a deficient number, since it is larger than the sum of its proper divisors (11957285).

7807680043 is a wasteful number, since it uses less digits than its factorization.

7807680043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11957284.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 7807680043 is about 88361.0776473443. The cubic root of 7807680043 is about 1983.8431667558.

The spelling of 7807680043 in words is "seven billion, eight hundred seven million, six hundred eighty thousand, forty-three".

Divisors: 1 653 11956631 7807680043