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5438779526380 = 22519234139738231
BaseRepresentation
bin100111100100101000010…
…0001011000110011101100
3201020221102220012112211211
41033021100201120303230
51203102110024321010
615322312452324204
71100640012124624
oct117112041306354
921227386175754
105438779526380
111807634288012
1273a0a4313664
13305b4a972805
1414b349db7884
159671d8c008a
hex4f250858cec

5438779526380 has 192 divisors, whose sum is σ = 12883976017920. Its totient is φ = 1918424217600.

The previous prime is 5438779526363. The next prime is 5438779526423. The reversal of 5438779526380 is 836259778345.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 142241865 + ... + 142280095.

It is an arithmetic number, because the mean of its divisors is an integer number (67104041760).

Almost surely, 25438779526380 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 5438779526380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6441988008960).

5438779526380 is an abundant number, since it is smaller than the sum of its proper divisors (7445196491540).

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

5438779526380 is a wasteful number, since it uses less digits than its factorization.

5438779526380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38720 (or 38718 counting only the distinct ones).

The product of its (nonzero) digits is 304819200, while the sum is 67.

The spelling of 5438779526380 in words is "five trillion, four hundred thirty-eight billion, seven hundred seventy-nine million, five hundred twenty-six thousand, three hundred eighty".