511406616101 has 4 divisors (see below), whose sum is σ = 511412582604. Its totient is φ = 511400649600.

The previous prime is 511406616079. The next prime is 511406616113. The reversal of 511406616101 is 101616604115.

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 172764091201 + 338642524900 = 415649^2 + 581930^2 .

It is a cyclic number.

It is not a de Polignac number, because 511406616101 - 2¹⁸ = 511406353957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511406616121) 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, 2852780 + ... + 3026741.

It is an arithmetic number, because the mean of its divisors is an integer number (127853145651).

Almost surely, 2^511406616101 is an apocalyptic number.

It is an amenable number.

511406616101 is a deficient number, since it is larger than the sum of its proper divisors (5966503).

511406616101 is an equidigital number, since it uses as much as digits as its factorization.

511406616101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5966502.

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 511406616101 in words is "five hundred eleven billion, four hundred six million, six hundred sixteen thousand, one hundred one".