201161622443454 has 12 divisors (see below), whose sum is σ = 435850181960856. Its totient is φ = 67053874147812.

The previous prime is 201161622443437. The next prime is 201161622443473. The reversal of 201161622443454 is 454344226161102.

201161622443454 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 6 + 1 + 62 + 244 + 345 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5587822845634 + ... + 5587822845669.

It is an arithmetic number, because the mean of its divisors is an integer number (36320848496738).

Almost surely, 2^{201161622443454} is an apocalyptic number.

201161622443454 is an abundant number, since it is smaller than the sum of its proper divisors (234688559517402).

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

201161622443454 is a wasteful number, since it uses less digits than its factorization.

201161622443454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11175645691311 (or 11175645691308 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The spelling of 201161622443454 in words is "two hundred one trillion, one hundred sixty-one billion, six hundred twenty-two million, four hundred forty-three thousand, four hundred fifty-four".