2455666667778 has 32 divisors (see below), whose sum is σ = 5055324585984. Its totient is φ = 794831283792.

The previous prime is 2455666667771. The next prime is 2455666667807. The reversal of 2455666667778 is 8777666665542.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2455666667771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34247800 + ... + 34319427.

It is an arithmetic number, because the mean of its divisors is an integer number (157978893312).

Almost surely, 2^{2455666667778} is an apocalyptic number.

2455666667778 is an abundant number, since it is smaller than the sum of its proper divisors (2599657918206).

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

2455666667778 is a wasteful number, since it uses less digits than its factorization.

2455666667778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68567406.

The product of its digits is 4267468800, while the sum is 75.

The spelling of 2455666667778 in words is "two trillion, four hundred fifty-five billion, six hundred sixty-six million, six hundred sixty-seven thousand, seven hundred seventy-eight".