663155424426 has 32 divisors (see below), whose sum is σ = 1457293824000. Its totient is φ = 199510458480.

The previous prime is 663155424403. The next prime is 663155424433. The reversal of 663155424426 is 624424551366.

663155424426 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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36134026 + ... + 36152373.

It is an arithmetic number, because the mean of its divisors is an integer number (45540432000).

Almost surely, 2^663155424426 is an apocalyptic number.

663155424426 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

663155424426 is an abundant number, since it is smaller than the sum of its proper divisors (794138399574).

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

663155424426 is a wasteful number, since it uses less digits than its factorization.

663155424426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72286554.

The product of its digits is 4147200, while the sum is 48.

The spelling of 663155424426 in words is "six hundred sixty-three billion, one hundred fifty-five million, four hundred twenty-four thousand, four hundred twenty-six".