201534211550 has 48 divisors (see below), whose sum is σ = 430797605760. Its totient is φ = 68711403360.

The previous prime is 201534211517. The next prime is 201534211583. The reversal of 201534211550 is 55112435102.

201534211550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (201534211517) and next prime (201534211583).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1545764 + ... + 1671063.

It is an arithmetic number, because the mean of its divisors is an integer number (8974950120).

Almost surely, 2^201534211550 is an apocalyptic number.

201534211550 is an abundant number, since it is smaller than the sum of its proper divisors (229263394210).

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

201534211550 is a wasteful number, since it uses less digits than its factorization.

201534211550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217025 (or 3217020 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 201534211550 its reverse (55112435102), we get a palindrome (256646646652).

The spelling of 201534211550 in words is "two hundred one billion, five hundred thirty-four million, two hundred eleven thousand, five hundred fifty".