511212411005 has 4 divisors (see below), whose sum is σ = 613454893212. Its totient is φ = 408969928800.

The previous prime is 511212410999. The next prime is 511212411007. The reversal of 511212411005 is 500114212115.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 272010230116 + 239202180889 = 521546^2 + 489083^2 .

It is not a de Polignac number, because 511212411005 - 2⁸ = 511212410749 is a prime.

It is a super-2 number, since 2×511212411005² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511212411007) 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, 51121241096 + ... + 51121241105.

It is an arithmetic number, because the mean of its divisors is an integer number (153363723303).

Almost surely, 2^511212411005 is an apocalyptic number.

It is an amenable number.

511212411005 is a deficient number, since it is larger than the sum of its proper divisors (102242482207).

511212411005 is a wasteful number, since it uses less digits than its factorization.

511212411005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102242482206.

The product of its (nonzero) digits is 400, while the sum is 23.

The spelling of 511212411005 in words is "five hundred eleven billion, two hundred twelve million, four hundred eleven thousand, five".