263425566778 has 16 divisors (see below), whose sum is σ = 434874712896. Its totient is φ = 118679256640.

The previous prime is 263425566751. The next prime is 263425566791. The reversal of 263425566778 is 877665524362.

263425566778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52979326 + ... + 52984297.

It is an arithmetic number, because the mean of its divisors is an integer number (27179669556).

Almost surely, 2^263425566778 is an apocalyptic number.

263425566778 is a deficient number, since it is larger than the sum of its proper divisors (171449146118).

263425566778 is a wasteful number, since it uses less digits than its factorization.

263425566778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105963749.

The product of its digits is 101606400, while the sum is 61.

The spelling of 263425566778 in words is "two hundred sixty-three billion, four hundred twenty-five million, five hundred sixty-six thousand, seven hundred seventy-eight".