201200161734 has 240 divisors, whose sum is σ = 537956289024. Its totient is φ = 55827636480.

The previous prime is 201200161717. The next prime is 201200161739. The reversal of 201200161734 is 437161002102.

201200161734 is a `hidden beast` number, since 2 + 0 + 12 + 0 + 0 + 1 + 617 + 34 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 201200161698 and 201200161707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201200161739) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 32359794 + ... + 32366010.

Almost surely, 2^201200161734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201200161734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268978144512).

201200161734 is an abundant number, since it is smaller than the sum of its proper divisors (336756127290).

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

201200161734 is a wasteful number, since it uses less digits than its factorization.

201200161734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6393 (or 6373 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

Adding to 201200161734 its reverse (437161002102), we get a palindrome (638361163836).

The spelling of 201200161734 in words is "two hundred one billion, two hundred million, one hundred sixty-one thousand, seven hundred thirty-four".