55461983280 has 160 divisors (see below), whose sum is σ = 188758418688. Its totient is φ = 13359590400.

The previous prime is 55461983267. The next prime is 55461983281. The reversal of 55461983280 is 8238916455.

It is not an unprimeable number, because it can be changed into a prime (55461983281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347575 + ... + 481385.

Almost surely, 2^55461983280 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 55461983280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94379209344).

55461983280 is an abundant number, since it is smaller than the sum of its proper divisors (133296435408).

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

55461983280 is a wasteful number, since it uses less digits than its factorization.

55461983280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133995 (or 133989 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 55461983280 in words is "fifty-five billion, four hundred sixty-one million, nine hundred eighty-three thousand, two hundred eighty".