511306862061 has 4 divisors (see below), whose sum is σ = 681742482752. Its totient is φ = 340871241372.

The previous prime is 511306862057. The next prime is 511306862071. The reversal of 511306862061 is 160268603115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 511306862061 - 2² = 511306862057 is a prime.

It is a super-2 number, since 2×511306862061² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511306862071) 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, 85217810341 + ... + 85217810346.

It is an arithmetic number, because the mean of its divisors is an integer number (170435620688).

Almost surely, 2^511306862061 is an apocalyptic number.

It is an amenable number.

511306862061 is a deficient number, since it is larger than the sum of its proper divisors (170435620691).

511306862061 is a wasteful number, since it uses less digits than its factorization.

511306862061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170435620690.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 511306862061 in words is "five hundred eleven billion, three hundred six million, eight hundred sixty-two thousand, sixty-one".