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64299070079 = 70191724779
BaseRepresentation
bin111011111000100001…
…011111001001111111
320010222010001012012222
4323320201133021333
52023141030220304
645312200115555
74434251035466
oct737041371177
9203863035188
1064299070079
11252a6170042
1210565765bbb
1360a931233a
14317d8179dd
151a14da14be
hexef885f27f

64299070079 has 4 divisors (see below), whose sum is σ = 64390795560. Its totient is φ = 64207344600.

The previous prime is 64299070049. The next prime is 64299070091. The reversal of 64299070079 is 97007099246.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64299070079 - 216 = 64299004543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64299070079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64299070049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45861689 + ... + 45863090.

It is an arithmetic number, because the mean of its divisors is an integer number (16097698890).

Almost surely, 264299070079 is an apocalyptic number.

64299070079 is a deficient number, since it is larger than the sum of its proper divisors (91725481).

64299070079 is an equidigital number, since it uses as much as digits as its factorization.

64299070079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91725480.

The product of its (nonzero) digits is 1714608, while the sum is 53.

The spelling of 64299070079 in words is "sixty-four billion, two hundred ninety-nine million, seventy thousand, seventy-nine".

Divisors: 1 701 91724779 64299070079