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68552864041 = 312211382711
BaseRepresentation
bin111111110110000100…
…011011000100101001
320112221120022022112111
4333312010123010221
52110344013122131
651254233442321
74644542505244
oct776604330451
9215846268474
1068552864041
1127089339442
12113522703a1
1366066a429c
14346475425b
151bb3559ab1
hexff611b129

68552864041 has 4 divisors (see below), whose sum is σ = 70764246784. Its totient is φ = 66341481300.

The previous prime is 68552863997. The next prime is 68552864047. The reversal of 68552864041 is 14046825586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68552864041 - 215 = 68552831273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68552864047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1105691325 + ... + 1105691386.

It is an arithmetic number, because the mean of its divisors is an integer number (17691061696).

Almost surely, 268552864041 is an apocalyptic number.

It is an amenable number.

68552864041 is a deficient number, since it is larger than the sum of its proper divisors (2211382743).

68552864041 is a wasteful number, since it uses less digits than its factorization.

68552864041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211382742.

The product of its (nonzero) digits is 1843200, while the sum is 49.

The spelling of 68552864041 in words is "sixty-eight billion, five hundred fifty-two million, eight hundred sixty-four thousand, forty-one".

Divisors: 1 31 2211382711 68552864041