511422401011 has 4 divisors (see below), whose sum is σ = 515101699000. Its totient is φ = 507743103024.

The previous prime is 511422400969. The next prime is 511422401023. The reversal of 511422401011 is 110104224115.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 511422401011 - 2³³ = 502832466419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511422401071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1839648786 + ... + 1839649063.

It is an arithmetic number, because the mean of its divisors is an integer number (128775424750).

Almost surely, 2^511422401011 is an apocalyptic number.

511422401011 is a deficient number, since it is larger than the sum of its proper divisors (3679297989).

511422401011 is a wasteful number, since it uses less digits than its factorization.

511422401011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3679297988.

The product of its (nonzero) digits is 320, while the sum is 22.

Adding to 511422401011 its reverse (110104224115), we get a palindrome (621526625126).

The spelling of 511422401011 in words is "five hundred eleven billion, four hundred twenty-two million, four hundred one thousand, eleven".