55265496440 has 192 divisors, whose sum is σ = 156681362880. Its totient is φ = 17173094400.

The previous prime is 55265496409. The next prime is 55265496443. The reversal of 55265496440 is 4469456255.

It is a happy number.

55265496440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55265496443) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11957330 + ... + 11961950.

It is an arithmetic number, because the mean of its divisors is an integer number (816048765).

Almost surely, 2^55265496440 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 55265496440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78340681440).

55265496440 is an abundant number, since it is smaller than the sum of its proper divisors (101415866440).

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

55265496440 is a wasteful number, since it uses less digits than its factorization.

55265496440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5014 (or 4999 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 55265496440 in words is "fifty-five billion, two hundred sixty-five million, four hundred ninety-six thousand, four hundred forty".