234573171661 has 2 divisors, whose sum is σ = 234573171662. Its totient is φ = 234573171660.

The previous prime is 234573171649. The next prime is 234573171829. The reversal of 234573171661 is 166171375432.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233607888900 + 965282761 = 483330^2 + 31069^2 .

It is a cyclic number.

It is not a de Polignac number, because 234573171661 - 2³³ = 225983237069 is a prime.

It is a super-3 number, since 3×234573171661³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234573171601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117286585830 + 117286585831.

It is an arithmetic number, because the mean of its divisors is an integer number (117286585831).

Almost surely, 2^234573171661 is an apocalyptic number.

It is an amenable number.

234573171661 is a deficient number, since it is larger than the sum of its proper divisors (1).

234573171661 is an equidigital number, since it uses as much as digits as its factorization.

234573171661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 46.

The spelling of 234573171661 in words is "two hundred thirty-four billion, five hundred seventy-three million, one hundred seventy-one thousand, six hundred sixty-one".