511500661010 has 64 divisors (see below), whose sum is σ = 936768693600. Its totient is φ = 201052127232.

The previous prime is 511500660973. The next prime is 511500661103. The reversal of 511500661010 is 10166005115.

It can be written as a sum of positive squares in 16 ways, for example, as 98027226649 + 413473434361 = 313093^2 + 643019^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 363023186 + ... + 363024594.

Almost surely, 2^511500661010 is an apocalyptic number.

511500661010 is a deficient number, since it is larger than the sum of its proper divisors (425268032590).

511500661010 is a wasteful number, since it uses less digits than its factorization.

511500661010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975.

The product of its (nonzero) digits is 900, while the sum is 26.

Adding to 511500661010 its reverse (10166005115), we get a palindrome (521666666125).

The spelling of 511500661010 in words is "five hundred eleven billion, five hundred million, six hundred sixty-one thousand, ten".