Search a number
-
+
69809011272 = 2333711131916993
BaseRepresentation
bin100000100000011110…
…0001111101001001000
320200012002222012121000
41001000330033221020
52120432101330042
652023025215000
75020634543130
oct1010074175110
9220162865530
1069809011272
1127673404450
1211642a91460
1367769c6b80
1435434dbac0
151c3898674c
hex1040f0fa48

69809011272 has 512 divisors, whose sum is σ = 274079232000. Its totient is φ = 15855575040.

The previous prime is 69809011271. The next prime is 69809011277. The reversal of 69809011272 is 27211090896.

It is not an unprimeable number, because it can be changed into a prime (69809011271) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4099608 + ... + 4116600.

It is an arithmetic number, because the mean of its divisors is an integer number (535311000).

Almost surely, 269809011272 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 69809011272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137039616000).

69809011272 is an abundant number, since it is smaller than the sum of its proper divisors (204270220728).

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

69809011272 is a wasteful number, since it uses less digits than its factorization.

69809011272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17058 (or 17048 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The spelling of 69809011272 in words is "sixty-nine billion, eight hundred nine million, eleven thousand, two hundred seventy-two".