203345911552 has 72 divisors (see below), whose sum is σ = 464024236032. Its totient is φ = 87121689600.

The previous prime is 203345911511. The next prime is 203345911603. The reversal of 203345911552 is 255119543302.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 6562977 + ... + 6593887.

It is an arithmetic number, because the mean of its divisors is an integer number (6444781056).

Almost surely, 2^203345911552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203345911552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232012118016).

203345911552 is an abundant number, since it is smaller than the sum of its proper divisors (260678324480).

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

203345911552 is an equidigital number, since it uses as much as digits as its factorization.

203345911552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34605 (or 34591 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 203345911552 in words is "two hundred three billion, three hundred forty-five million, nine hundred eleven thousand, five hundred fifty-two".