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64073897007 = 3236713859809
BaseRepresentation
bin111011101011000110…
…100001010000101111
320010101102100012211120
4323223012201100233
52022210404201012
645233553552023
74425545065311
oct735306412057
9203342305746
1064073897007
11251a005419a
1210502275613
136071783133
14315b9617b1
151a0022358c
hexeeb1a142f

64073897007 has 16 divisors (see below), whose sum is σ = 90476839680. Its totient is φ = 40248882432.

The previous prime is 64073896987. The next prime is 64073897101. The reversal of 64073897007 is 70079837046.

It is not a de Polignac number, because 64073897007 - 28 = 64073896751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64073897507) 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 15 ways as a sum of consecutive naturals, for example, 6925282 + ... + 6934527.

It is an arithmetic number, because the mean of its divisors is an integer number (5654802480).

Almost surely, 264073897007 is an apocalyptic number.

64073897007 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

64073897007 is a deficient number, since it is larger than the sum of its proper divisors (26402942673).

64073897007 is a wasteful number, since it uses less digits than its factorization.

64073897007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13859902.

The product of its (nonzero) digits is 1778112, while the sum is 51.

The spelling of 64073897007 in words is "sixty-four billion, seventy-three million, eight hundred ninety-seven thousand, seven".

Divisors: 1 3 23 67 69 201 1541 4623 13859809 41579427 318775607 928607203 956326821 2785821609 21357965669 64073897007