755555005778 has 32 divisors (see below), whose sum is σ = 1190874617856. Its totient is φ = 359178962688.

The previous prime is 755555005771. The next prime is 755555005783. The reversal of 755555005778 is 877500555557.

It is a super-2 number, since 2×755555005778² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (755555005771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73751 + ... + 1231482.

It is an arithmetic number, because the mean of its divisors is an integer number (37214831808).

Almost surely, 2^755555005778 is an apocalyptic number.

755555005778 is a deficient number, since it is larger than the sum of its proper divisors (435319612078).

755555005778 is a wasteful number, since it uses less digits than its factorization.

755555005778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305458.

The product of its (nonzero) digits is 42875000, while the sum is 59.

The spelling of 755555005778 in words is "seven hundred fifty-five billion, five hundred fifty-five million, five thousand, seven hundred seventy-eight".