235861401613 has 2 divisors, whose sum is σ = 235861401614. Its totient is φ = 235861401612.

The previous prime is 235861401583. The next prime is 235861401647. The reversal of 235861401613 is 316104168532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170735892804 + 65125508809 = 413202^2 + 255197^2 .

It is a cyclic number.

It is not a de Polignac number, because 235861401613 - 2²⁵ = 235827847181 is a prime.

It is a super-3 number, since 3×235861401613³ (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 (235861401313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117930700806 + 117930700807.

It is an arithmetic number, because the mean of its divisors is an integer number (117930700807).

Almost surely, 2^235861401613 is an apocalyptic number.

It is an amenable number.

235861401613 is a deficient number, since it is larger than the sum of its proper divisors (1).

235861401613 is an equidigital number, since it uses as much as digits as its factorization.

235861401613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 235861401613 in words is "two hundred thirty-five billion, eight hundred sixty-one million, four hundred one thousand, six hundred thirteen".