2555420230440 has 256 divisors, whose sum is σ = 10619928576000. Its totient is φ = 530996394240.

The previous prime is 2555420230439. The next prime is 2555420230459. The reversal of 2555420230440 is 440320245552.

2555420230440 is a `hidden beast` number, since 2 + 5 + 5 + 5 + 4 + 202 + 3 + 0 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2555420230395 and 2555420230404.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15281320 + ... + 15447639.

It is an arithmetic number, because the mean of its divisors is an integer number (41484096000).

Almost surely, 2^{2555420230440} is an apocalyptic number.

2555420230440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2555420230440 is an abundant number, since it is smaller than the sum of its proper divisors (8064508345560).

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

2555420230440 is a wasteful number, since it uses less digits than its factorization.

2555420230440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30728997 (or 30728987 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 36.

Adding to 2555420230440 its reverse (440320245552), we get a palindrome (2995740475992).

The spelling of 2555420230440 in words is "two trillion, five hundred fifty-five billion, four hundred twenty million, two hundred thirty thousand, four hundred forty".