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64074284971 = 238335299511
BaseRepresentation
bin111011101011000111…
…111111111110101011
320010101110001221000121
4323223013333332223
52022211004104341
645234010144111
74425551302354
oct735307777653
9203343057017
1064074284971
11251a0299724
1210502422037
13607188a8b8
14315ba22d2b
151a0029d4d1
hexeeb1fffab

64074284971 has 16 divisors (see below), whose sum is σ = 67691957760. Its totient is φ = 60526509120.

The previous prime is 64074284941. The next prime is 64074285019. The reversal of 64074284971 is 17948247046.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-64074284971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64074284941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6732106 + ... + 6741616.

It is an arithmetic number, because the mean of its divisors is an integer number (4230747360).

Almost surely, 264074284971 is an apocalyptic number.

64074284971 is a deficient number, since it is larger than the sum of its proper divisors (3617672789).

64074284971 is a wasteful number, since it uses less digits than its factorization.

64074284971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13146.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 64074284971 in words is "sixty-four billion, seventy-four million, two hundred eighty-four thousand, nine hundred seventy-one".

Divisors: 1 23 83 1909 3529 9511 81167 218753 292907 789413 6736861 18156499 33564319 771979337 2785838477 64074284971