20401884002029 has 2 divisors, whose sum is σ = 20401884002030. Its totient is φ = 20401884002028.

The previous prime is 20401884001979. The next prime is 20401884002041. The reversal of 20401884002029 is 92020048810402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19541943073129 + 859940928900 = 4420627^2 + 927330^2 .

It is a cyclic number.

It is not a de Polignac number, because 20401884002029 - 2⁹ = 20401884001517 is a prime.

It is a super-2 number, since 2×20401884002029² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20401884001982 and 20401884002000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20401884006029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200942001014 + 10200942001015.

It is an arithmetic number, because the mean of its divisors is an integer number (10200942001015).

Almost surely, 2^{20401884002029} is an apocalyptic number.

It is an amenable number.

20401884002029 is a deficient number, since it is larger than the sum of its proper divisors (1).

20401884002029 is an equidigital number, since it uses as much as digits as its factorization.

20401884002029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 20401884002029 in words is "twenty trillion, four hundred one billion, eight hundred eighty-four million, two thousand, twenty-nine".