61548147465896 has 128 divisors (see below), whose sum is σ = 143990072513280. Its totient is φ = 24013470283776.

The previous prime is 61548147465881. The next prime is 61548147465947. The reversal of 61548147465896 is 69856474184516.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 960652055 + ... + 960716121.

It is an arithmetic number, because the mean of its divisors is an integer number (1124922441510).

Almost surely, 2^{61548147465896} 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 61548147465896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71995036256640).

61548147465896 is an abundant number, since it is smaller than the sum of its proper divisors (82441925047384).

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

61548147465896 is a wasteful number, since it uses less digits than its factorization.

61548147465896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82243 (or 82239 counting only the distinct ones).

The product of its digits is 1393459200, while the sum is 74.

The spelling of 61548147465896 in words is "sixty-one trillion, five hundred forty-eight billion, one hundred forty-seven million, four hundred sixty-five thousand, eight hundred ninety-six".