201043321950 has 96 divisors (see below), whose sum is σ = 517548303360. Its totient is φ = 51592089600.

The previous prime is 201043321939. The next prime is 201043321951. The reversal of 201043321950 is 59123340102.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201043321951) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 711582 + ... + 953118.

It is an arithmetic number, because the mean of its divisors is an integer number (5391128160).

Almost surely, 2^201043321950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201043321950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258774151680).

201043321950 is an abundant number, since it is smaller than the sum of its proper divisors (316504981410).

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

201043321950 is a wasteful number, since it uses less digits than its factorization.

201043321950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241762 (or 241757 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 201043321950 in words is "two hundred one billion, forty-three million, three hundred twenty-one thousand, nine hundred fifty".