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64961875495 = 5111181125009
BaseRepresentation
bin111100100000000001…
…111000111000100111
320012200022020012022201
4330200001320320213
52031020220003440
645502034235331
74456546555006
oct744001707047
9205608205281
1064961875495
1125606315610
121070b725b47
13618372aaaa
14320386cc3d
151a5317819a
hexf20078e27

64961875495 has 8 divisors (see below), whose sum is σ = 85041000720. Its totient is φ = 47245000320.

The previous prime is 64961875423. The next prime is 64961875499. The reversal of 64961875495 is 59457816946.

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

It is not a de Polignac number, because 64961875495 - 211 = 64961873447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64961875499) 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, 590562450 + ... + 590562559.

It is an arithmetic number, because the mean of its divisors is an integer number (10630125090).

Almost surely, 264961875495 is an apocalyptic number.

64961875495 is a deficient number, since it is larger than the sum of its proper divisors (20079125225).

64961875495 is a wasteful number, since it uses less digits than its factorization.

64961875495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181125025.

The product of its digits is 65318400, while the sum is 64.

The spelling of 64961875495 in words is "sixty-four billion, nine hundred sixty-one million, eight hundred seventy-five thousand, four hundred ninety-five".

Divisors: 1 5 11 55 1181125009 5905625045 12992375099 64961875495