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64379935479 = 376379280967
BaseRepresentation
bin111011111101010101…
…111101101011110111
320011011202012120200210
4323331111331223313
52023322230413404
645324205240503
74436252264616
oct737525755367
9204152176623
1064379935479
1125337882452
1210588863133
1360bccb65a2
14318a46787d
151a1c026689
hexefd57daf7

64379935479 has 8 divisors (see below), whose sum is σ = 85841343360. Its totient is φ = 42919242296.

The previous prime is 64379935469. The next prime is 64379935511. The reversal of 64379935479 is 97453997346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64379935479 - 27 = 64379935351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64379935409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88654 + ... + 369620.

It is an arithmetic number, because the mean of its divisors is an integer number (10730167920).

Almost surely, 264379935479 is an apocalyptic number.

64379935479 is a deficient number, since it is larger than the sum of its proper divisors (21461407881).

64379935479 is a wasteful number, since it uses less digits than its factorization.

64379935479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357349.

The product of its digits is 154314720, while the sum is 66.

The spelling of 64379935479 in words is "sixty-four billion, three hundred seventy-nine million, nine hundred thirty-five thousand, four hundred seventy-nine".

Divisors: 1 3 76379 229137 280967 842901 21459978493 64379935479