234689133457 has 4 divisors (see below), whose sum is σ = 238666915440. Its totient is φ = 230711351476.

The previous prime is 234689133449. The next prime is 234689133467. The reversal of 234689133457 is 754331986432.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 234689133457 - 2³ = 234689133449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 234689133398 and 234689133407.

It is not an unprimeable number, because it can be changed into a prime (234689133467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1988890903 + ... + 1988891020.

It is an arithmetic number, because the mean of its divisors is an integer number (59666728860).

Almost surely, 2^234689133457 is an apocalyptic number.

It is an amenable number.

234689133457 is a deficient number, since it is larger than the sum of its proper divisors (3977781983).

234689133457 is an equidigital number, since it uses as much as digits as its factorization.

234689133457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977781982.

The product of its digits is 13063680, while the sum is 55.

The spelling of 234689133457 in words is "two hundred thirty-four billion, six hundred eighty-nine million, one hundred thirty-three thousand, four hundred fifty-seven".