201161434442406 has 16 divisors (see below), whose sum is σ = 405394035824448. Its totient is φ = 66541950324200.

The previous prime is 201161434442357. The next prime is 201161434442407. The reversal of 201161434442406 is 604244434161102.

It is a super-2 number, since 2×201161434442406² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201161434442407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127965288300 + ... + 127965289871.

It is an arithmetic number, because the mean of its divisors is an integer number (25337127239028).

Almost surely, 2^{201161434442406} is an apocalyptic number.

201161434442406 is an abundant number, since it is smaller than the sum of its proper divisors (204232601382042).

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

201161434442406 is a wasteful number, since it uses less digits than its factorization.

201161434442406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255930578307.

The product of its (nonzero) digits is 442368, while the sum is 42.

The spelling of 201161434442406 in words is "two hundred one trillion, one hundred sixty-one billion, four hundred thirty-four million, four hundred forty-two thousand, four hundred six".