512211761690 has 16 divisors (see below), whose sum is σ = 923415056928. Its totient is φ = 204566063376.

The previous prime is 512211761641. The next prime is 512211761701. The reversal of 512211761690 is 96167112215.

It is a happy number.

It is a super-2 number, since 2×512211761690² (a number of 24 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 39823412 + ... + 39836271.

It is an arithmetic number, because the mean of its divisors is an integer number (57713441058).

Almost surely, 2^512211761690 is an apocalyptic number.

512211761690 is a deficient number, since it is larger than the sum of its proper divisors (411203295238).

512211761690 is a wasteful number, since it uses less digits than its factorization.

512211761690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79660333.

The product of its (nonzero) digits is 45360, while the sum is 41.

The spelling of 512211761690 in words is "five hundred twelve billion, two hundred eleven million, seven hundred sixty-one thousand, six hundred ninety".