201006423346505 has 16 divisors (see below), whose sum is σ = 275668805952000. Its totient is φ = 137831549042112.

The previous prime is 201006423346493. The next prime is 201006423346507. The reversal of 201006423346505 is 505643324600102.

It is a cyclic number.

It is not a de Polignac number, because 201006423346505 - 2²⁰ = 201006422297929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201006423346507) 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 in 15 ways as a sum of consecutive naturals, for example, 26293889 + ... + 33066318.

It is an arithmetic number, because the mean of its divisors is an integer number (17229300372000).

Almost surely, 2^{201006423346505} is an apocalyptic number.

It is an amenable number.

201006423346505 is a deficient number, since it is larger than the sum of its proper divisors (74662382605495).

201006423346505 is an equidigital number, since it uses as much as digits as its factorization.

201006423346505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59456968.

The product of its (nonzero) digits is 518400, while the sum is 41.

Adding to 201006423346505 its reverse (505643324600102), we get a palindrome (706649747946607).

The spelling of 201006423346505 in words is "two hundred one trillion, six billion, four hundred twenty-three million, three hundred forty-six thousand, five hundred five".