235691124649 has 2 divisors, whose sum is σ = 235691124650. Its totient is φ = 235691124648.

The previous prime is 235691124569. The next prime is 235691124659. The reversal of 235691124649 is 946421196532.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197522469225 + 38168655424 = 444435^2 + 195368^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-235691124649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 235691124596 and 235691124605.

It is not a weakly prime, because it can be changed into another prime (235691124659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117845562324 + 117845562325.

It is an arithmetic number, because the mean of its divisors is an integer number (117845562325).

Almost surely, 2^235691124649 is an apocalyptic number.

It is an amenable number.

235691124649 is a deficient number, since it is larger than the sum of its proper divisors (1).

235691124649 is an equidigital number, since it uses as much as digits as its factorization.

235691124649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 52.

The spelling of 235691124649 in words is "two hundred thirty-five billion, six hundred ninety-one million, one hundred twenty-four thousand, six hundred forty-nine".