2165502401011 has 2 divisors, whose sum is σ = 2165502401012. Its totient is φ = 2165502401010.

The previous prime is 2165502400973. The next prime is 2165502401059. The reversal of 2165502401011 is 1101042055612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2165502401011 - 2²³ = 2165494012403 is a prime.

It is not a weakly prime, because it can be changed into another prime (2165502401411) 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, 1082751200505 + 1082751200506.

It is an arithmetic number, because the mean of its divisors is an integer number (1082751200506).

Almost surely, 2^{2165502401011} is an apocalyptic number.

2165502401011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165502401011 is an equidigital number, since it uses as much as digits as its factorization.

2165502401011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 2165502401011 its reverse (1101042055612), we get a palindrome (3266544456623).

The spelling of 2165502401011 in words is "two trillion, one hundred sixty-five billion, five hundred two million, four hundred one thousand, eleven".