453755571661 has 6 divisors (see below), whose sum is σ = 527838114030. Its totient is φ = 388933347096.

The previous prime is 453755571653. The next prime is 453755571671. The reversal of 453755571661 is 166175557354.

It can be written as a sum of positive squares in only one way, i.e., 361418594761 + 92336976900 = 601181^2 + 303870^2 .

It is not a de Polignac number, because 453755571661 - 2³ = 453755571653 is a prime.

It is a super-3 number, since 3×453755571661³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (453755571631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4630158846 + ... + 4630158943.

It is an arithmetic number, because the mean of its divisors is an integer number (87973019005).

Almost surely, 2^453755571661 is an apocalyptic number.

It is an amenable number.

453755571661 is a deficient number, since it is larger than the sum of its proper divisors (74082542369).

453755571661 is an equidigital number, since it uses as much as digits as its factorization.

453755571661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9260317803 (or 9260317796 counting only the distinct ones).

The product of its digits is 13230000, while the sum is 55.

The spelling of 453755571661 in words is "four hundred fifty-three billion, seven hundred fifty-five million, five hundred seventy-one thousand, six hundred sixty-one".