61163606840480 has 96 divisors (see below), whose sum is σ = 146209586680080. Its totient is φ = 24176586424320.

The previous prime is 61163606840477. The next prime is 61163606840491. The reversal of 61163606840480 is 8404860636116.

It can be written as a sum of positive squares in 8 ways, for example, as 46809844099984 + 14353762740496 = 6841772^2 + 3788636^2 .

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 15 ways as a sum of consecutive naturals, for example, 7277666 + ... + 13239774.

Almost surely, 2^{61163606840480} 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 61163606840480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73104793340040).

61163606840480 is an abundant number, since it is smaller than the sum of its proper divisors (85045979839600).

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

61163606840480 is a wasteful number, since it uses less digits than its factorization.

61163606840480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5962882 (or 5962874 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 53.

The spelling of 61163606840480 in words is "sixty-one trillion, one hundred sixty-three billion, six hundred six million, eight hundred forty thousand, four hundred eighty".