55861281024 has 144 divisors (see below), whose sum is σ = 153000169728. Its totient is φ = 18080464896.

The previous prime is 55861281011. The next prime is 55861281031. The reversal of 55861281024 is 42018216855.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16394329 + ... + 16397735.

Almost surely, 2^55861281024 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 55861281024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76500084864).

55861281024 is an abundant number, since it is smaller than the sum of its proper divisors (97138888704).

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

55861281024 is a wasteful number, since it uses less digits than its factorization.

55861281024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040 (or 4026 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 42.

Adding to 55861281024 its reverse (42018216855), we get a palindrome (97879497879).

The spelling of 55861281024 in words is "fifty-five billion, eight hundred sixty-one million, two hundred eighty-one thousand, twenty-four".