55261650416 has 120 divisors (see below), whose sum is σ = 125697312000. Its totient is φ = 23466506112.

The previous prime is 55261650413. The next prime is 55261650443. The reversal of 55261650416 is 61405616255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55261650413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53186825 + ... + 53187863.

It is an arithmetic number, because the mean of its divisors is an integer number (1047477600).

Almost surely, 2^55261650416 is an apocalyptic number.

55261650416 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55261650416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62848656000).

55261650416 is an abundant number, since it is smaller than the sum of its proper divisors (70435661584).

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

55261650416 is a wasteful number, since it uses less digits than its factorization.

55261650416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619 (or 1606 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 55261650416 in words is "fifty-five billion, two hundred sixty-one million, six hundred fifty thousand, four hundred sixteen".