2555464375440 has 320 divisors, whose sum is σ = 9028388455680. Its totient is φ = 664018145280.

The previous prime is 2555464375391. The next prime is 2555464375507. The reversal of 2555464375440 is 445734645552.

It is a happy number.

2555464375440 is a `hidden beast` number, since 2 + 5 + 5 + 5 + 4 + 64 + 37 + 544 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 39069804 + ... + 39135156.

It is an arithmetic number, because the mean of its divisors is an integer number (28213713924).

Almost surely, 2^{2555464375440} is an apocalyptic number.

2555464375440 is a gapful number since it is divisible by the number (20) 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 2555464375440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4514194227840).

2555464375440 is an abundant number, since it is smaller than the sum of its proper divisors (6472924080240).

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

2555464375440 is a wasteful number, since it uses less digits than its factorization.

2555464375440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65839 (or 65827 counting only the distinct ones).

The product of its (nonzero) digits is 40320000, while the sum is 54.

The spelling of 2555464375440 in words is "two trillion, five hundred fifty-five billion, four hundred sixty-four million, three hundred seventy-five thousand, four hundred forty".