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64319092992 = 28327112231433
BaseRepresentation
bin111011111001101101…
…110111100100000000
320011000111201110111100
4323321231313210000
52023211141433432
645314153214400
74434613161360
oct737155674400
9204014643440
1064319092992
11253064a6600
1210570401400
1360b050300b
14318234a9a0
151a16a0907c
hexef9b77900

64319092992 has 648 divisors, whose sum is σ = 243257519232. Its totient is φ = 15968747520.

The previous prime is 64319092967. The next prime is 64319093063. The reversal of 64319092992 is 29929091346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 44883508 + ... + 44884940.

Almost surely, 264319092992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64319092992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121628759616).

64319092992 is an abundant number, since it is smaller than the sum of its proper divisors (178938426240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64319092992 is a wasteful number, since it uses less digits than its factorization.

64319092992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507 (or 1479 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The spelling of 64319092992 in words is "sixty-four billion, three hundred nineteen million, ninety-two thousand, nine hundred ninety-two".