3256402026629 has 2 divisors, whose sum is σ = 3256402026630. Its totient is φ = 3256402026628.

The previous prime is 3256402026601. The next prime is 3256402026637. The reversal of 3256402026629 is 9266202046523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2698956122500 + 557445904129 = 1642850^2 + 746623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3256402026629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3256402026679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1628201013314 + 1628201013315.

It is an arithmetic number, because the mean of its divisors is an integer number (1628201013315).

Almost surely, 2^{3256402026629} is an apocalyptic number.

It is an amenable number.

3256402026629 is a deficient number, since it is larger than the sum of its proper divisors (1).

3256402026629 is an equidigital number, since it uses as much as digits as its factorization.

3256402026629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 3256402026629 in words is "three trillion, two hundred fifty-six billion, four hundred two million, twenty-six thousand, six hundred twenty-nine".