201544215210 has 96 divisors (see below), whose sum is σ = 566029795968. Its totient is φ = 49460906880.

The previous prime is 201544215209. The next prime is 201544215211. The reversal of 201544215210 is 12512445102.

It is a happy number.

201544215210 is a `hidden beast` number, since 2 + 0 + 1 + 5 + 442 + 1 + 5 + 210 = 666.

It is an interprime number because it is at equal distance from previous prime (201544215209) and next prime (201544215211).

It is a super-2 number, since 2×201544215210² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201544215211) 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, 127059 + ... + 647481.

It is an arithmetic number, because the mean of its divisors is an integer number (5896143708).

Almost surely, 2^201544215210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201544215210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283014897984).

201544215210 is an abundant number, since it is smaller than the sum of its proper divisors (364485580758).

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

201544215210 is a wasteful number, since it uses less digits than its factorization.

201544215210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520780 (or 520777 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

It can be divided in two parts, 20154 and 4215210, that added together give a square (4235364 = 2058²).

The spelling of 201544215210 in words is "two hundred one billion, five hundred forty-four million, two hundred fifteen thousand, two hundred ten".