511340346205 has 16 divisors (see below), whose sum is σ = 667351735344. Its totient is φ = 373866508800.

The previous prime is 511340346203. The next prime is 511340346299. The reversal of 511340346205 is 502643043115.

It can be written as a sum of positive squares in 8 ways, for example, as 16166359609 + 495173986596 = 127147^2 + 703686^2 .

It is not a de Polignac number, because 511340346205 - 2¹ = 511340346203 is a prime.

It is a super-2 number, since 2×511340346205² (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 (511340346203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38937864 + ... + 38950993.

It is an arithmetic number, because the mean of its divisors is an integer number (41709483459).

Almost surely, 2^511340346205 is an apocalyptic number.

It is an amenable number.

511340346205 is a deficient number, since it is larger than the sum of its proper divisors (156011389139).

511340346205 is a wasteful number, since it uses less digits than its factorization.

511340346205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77888976.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 511340346205 in words is "five hundred eleven billion, three hundred forty million, three hundred forty-six thousand, two hundred five".