32136405505621 has 2 divisors, whose sum is σ = 32136405505622. Its totient is φ = 32136405505620.

The previous prime is 32136405505499. The next prime is 32136405505727. The reversal of 32136405505621 is 12650550463123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30762985580721 + 1373419924900 = 5546439^2 + 1171930^2 .

It is a cyclic number.

It is not a de Polignac number, because 32136405505621 - 2¹⁹ = 32136404981333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32136405305621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16068202752810 + 16068202752811.

It is an arithmetic number, because the mean of its divisors is an integer number (16068202752811).

Almost surely, 2^{32136405505621} is an apocalyptic number.

It is an amenable number.

32136405505621 is a deficient number, since it is larger than the sum of its proper divisors (1).

32136405505621 is an equidigital number, since it uses as much as digits as its factorization.

32136405505621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 43.

Adding to 32136405505621 its reverse (12650550463123), we get a palindrome (44786955968744).

The spelling of 32136405505621 in words is "thirty-two trillion, one hundred thirty-six billion, four hundred five million, five hundred five thousand, six hundred twenty-one".