511406123051 has 4 divisors (see below), whose sum is σ = 511407587472. Its totient is φ = 511404658632.

The previous prime is 511406123009. The next prime is 511406123077. The reversal of 511406123051 is 150321604115.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 511406123051 - 2²⁶ = 511339014187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511406129051) 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, 130241 + ... + 1019693.

It is an arithmetic number, because the mean of its divisors is an integer number (127851896868).

Almost surely, 2^511406123051 is an apocalyptic number.

511406123051 is a deficient number, since it is larger than the sum of its proper divisors (1464421).

511406123051 is an equidigital number, since it uses as much as digits as its factorization.

511406123051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464420.

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 511406123051 its reverse (150321604115), we get a palindrome (661727727166).

The spelling of 511406123051 in words is "five hundred eleven billion, four hundred six million, one hundred twenty-three thousand, fifty-one".