235689145690 has 8 divisors (see below), whose sum is σ = 424240462260. Its totient is φ = 94275658272.

The previous prime is 235689145673. The next prime is 235689145711. The reversal of 235689145690 is 96541986532.

It can be written as a sum of positive squares in 2 ways, for example, as 234603640881 + 1085504809 = 484359^2 + 32947^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×235689145690² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11784457275 + ... + 11784457294.

Almost surely, 2^235689145690 is an apocalyptic number.

235689145690 is a deficient number, since it is larger than the sum of its proper divisors (188551316570).

235689145690 is a wasteful number, since it uses less digits than its factorization.

235689145690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23568914576.

The product of its (nonzero) digits is 13996800, while the sum is 58.

The spelling of 235689145690 in words is "two hundred thirty-five billion, six hundred eighty-nine million, one hundred forty-five thousand, six hundred ninety".