263534106426 has 16 divisors (see below), whose sum is σ = 532501906944. Its totient is φ = 86939086464.

The previous prime is 263534106383. The next prime is 263534106439. The reversal of 263534106426 is 624601435362.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226403290 + ... + 226404453.

It is an arithmetic number, because the mean of its divisors is an integer number (33281369184).

Almost surely, 2^263534106426 is an apocalyptic number.

263534106426 is an abundant number, since it is smaller than the sum of its proper divisors (268967800518).

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

263534106426 is a wasteful number, since it uses less digits than its factorization.

263534106426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452807845.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 263534106426 in words is "two hundred sixty-three billion, five hundred thirty-four million, one hundred six thousand, four hundred twenty-six".