2178108457755 has 16 divisors (see below), whose sum is σ = 3485300616960. Its totient is φ = 1161548815968.

The previous prime is 2178108457739. The next prime is 2178108457801. The reversal of 2178108457755 is 5577548018712.

It is not a de Polignac number, because 2178108457755 - 2⁴ = 2178108457739 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6648985 + ... + 6968874.

It is an arithmetic number, because the mean of its divisors is an integer number (217831288560).

Almost surely, 2^{2178108457755} is an apocalyptic number.

2178108457755 is a deficient number, since it is larger than the sum of its proper divisors (1307192159205).

2178108457755 is a wasteful number, since it uses less digits than its factorization.

2178108457755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13628530.

The product of its (nonzero) digits is 21952000, while the sum is 60.

The spelling of 2178108457755 in words is "two trillion, one hundred seventy-eight billion, one hundred eight million, four hundred fifty-seven thousand, seven hundred fifty-five".