2555344515378 has 32 divisors (see below), whose sum is σ = 5284100528640. Its totient is φ = 822968657280.

The previous prime is 2555344515377. The next prime is 2555344515443. The reversal of 2555344515378 is 8735154435552.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2555344515377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11018473 + ... + 11247996.

It is an arithmetic number, because the mean of its divisors is an integer number (165128141520).

Almost surely, 2^{2555344515378} is an apocalyptic number.

2555344515378 is an abundant number, since it is smaller than the sum of its proper divisors (2728756013262).

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

2555344515378 is a wasteful number, since it uses less digits than its factorization.

2555344515378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22267122.

The product of its digits is 50400000, while the sum is 57.

The spelling of 2555344515378 in words is "two trillion, five hundred fifty-five billion, three hundred forty-four million, five hundred fifteen thousand, three hundred seventy-eight".