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61082469392 = 2472294321453
BaseRepresentation
bin111000111000110011…
…001000010000010000
312211122221102221121012
4320320303020100100
52000044103010032
644021053150052
74261452265100
oct707063102020
9184587387535
1061082469392
11239a550936a
12ba0848b328
1359b5ab0719
142d5654b200
1518c77c46b2
hexe38cc8410

61082469392 has 180 divisors, whose sum is σ = 145905890220. Its totient is φ = 24670711296.

The previous prime is 61082469389. The next prime is 61082469403. The reversal of 61082469392 is 29396428016.

It can be written as a sum of positive squares in 2 ways, for example, as 49078199296 + 12004270096 = 221536^2 + 109564^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61082469392.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 42038138 + ... + 42039590.

It is an arithmetic number, because the mean of its divisors is an integer number (810588279).

Almost surely, 261082469392 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 61082469392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72952945110).

61082469392 is an abundant number, since it is smaller than the sum of its proper divisors (84823420828).

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

61082469392 is a wasteful number, since it uses less digits than its factorization.

61082469392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590 (or 1534 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 61082469392 in words is "sixty-one billion, eighty-two million, four hundred sixty-nine thousand, three hundred ninety-two".