55432550154240 has 2160 divisors, whose sum is σ = 234577187160624. Its totient is φ = 12485394432000.

The previous prime is 55432550154211. The next prime is 55432550154257. The reversal of 55432550154240 is 4245105523455.

55432550154240 is a `hidden beast` number, since 5 + 5 + 4 + 3 + 2 + 550 + 1 + 54 + 2 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (2160).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 262713507735 + ... + 262713507945.

Almost surely, 2^{55432550154240} 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 55432550154240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117288593580312).

55432550154240 is an abundant number, since it is smaller than the sum of its proper divisors (179144637006384).

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

55432550154240 is an equidigital number, since it uses as much as digits as its factorization.

55432550154240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 2400000, while the sum is 45.

Adding to 55432550154240 its reverse (4245105523455), we get a palindrome (59677655677695).

The spelling of 55432550154240 in words is "fifty-five trillion, four hundred thirty-two billion, five hundred fifty million, one hundred fifty-four thousand, two hundred forty".