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64748084747 = 2512273113489
BaseRepresentation
bin111100010011010010…
…010101111000001011
320012010101221111112212
4330103102111320023
52030101002202442
645424520055335
74451342432243
oct742322257013
9205111844485
1064748084747
1125506673445
121067000454b
13614b3556a8
1431c32dab23
151a3e4e7a82
hexf13495e0b

64748084747 has 8 divisors (see below), whose sum is σ = 65035217520. Its totient is φ = 64461184000.

The previous prime is 64748084663. The next prime is 64748084801. The reversal of 64748084747 is 74748084746.

64748084747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64748084747 - 220 = 64747036171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64748084447) 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, 513779 + ... + 627267.

It is an arithmetic number, because the mean of its divisors is an integer number (8129402190).

Almost surely, 264748084747 is an apocalyptic number.

64748084747 is a deficient number, since it is larger than the sum of its proper divisors (287132773).

64748084747 is a wasteful number, since it uses less digits than its factorization.

64748084747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116013.

The product of its (nonzero) digits is 33718272, while the sum is 59.

Subtracting 64748084747 from its reverse (74748084746), we obtain a palindrome (9999999999).

The spelling of 64748084747 in words is "sixty-four billion, seven hundred forty-eight million, eighty-four thousand, seven hundred forty-seven".

Divisors: 1 251 2273 113489 570523 28485739 257960497 64748084747