20690548295029 has 2 divisors, whose sum is σ = 20690548295030. Its totient is φ = 20690548295028.

The previous prime is 20690548295003. The next prime is 20690548295041. The reversal of 20690548295029 is 92059284509602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12230582700625 + 8459965594404 = 3497225^2 + 2908602^2 .

It is a cyclic number.

It is not a de Polignac number, because 20690548295029 - 2¹⁹ = 20690547770741 is a prime.

It is a super-2 number, since 2×20690548295029² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20690548295929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10345274147514 + 10345274147515.

It is an arithmetic number, because the mean of its divisors is an integer number (10345274147515).

Almost surely, 2^{20690548295029} is an apocalyptic number.

It is an amenable number.

20690548295029 is a deficient number, since it is larger than the sum of its proper divisors (1).

20690548295029 is an equidigital number, since it uses as much as digits as its factorization.

20690548295029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27993600, while the sum is 61.

The spelling of 20690548295029 in words is "twenty trillion, six hundred ninety billion, five hundred forty-eight million, two hundred ninety-five thousand, twenty-nine".