203164166620 has 24 divisors (see below), whose sum is σ = 426722877504. Its totient is φ = 81250785216.

The previous prime is 203164166599. The next prime is 203164166659. The reversal of 203164166620 is 26661461302.

It is a self number, because there is not a number n which added to its sum of digits gives 203164166620.

It is a congruent 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, 817812 + ... + 1036891.

It is an arithmetic number, because the mean of its divisors is an integer number (17780119896).

Almost surely, 2^203164166620 is an apocalyptic number.

203164166620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203164166620 is an abundant number, since it is smaller than the sum of its proper divisors (223558710884).

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

203164166620 is a wasteful number, since it uses less digits than its factorization.

203164166620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860189 (or 1860187 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 203164166620 in words is "two hundred three billion, one hundred sixty-four million, one hundred sixty-six thousand, six hundred twenty".