210505610312 has 16 divisors (see below), whose sum is σ = 415471599600. Its totient is φ = 99713183760.

The previous prime is 210505610309. The next prime is 210505610333. The reversal of 210505610312 is 213016505012.

It is a super-2 number, since 2×210505610312² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692452514 + ... + 692452817.

It is an arithmetic number, because the mean of its divisors is an integer number (25966974975).

Almost surely, 2^210505610312 is an apocalyptic number.

It is an amenable number.

210505610312 is a deficient number, since it is larger than the sum of its proper divisors (204965989288).

210505610312 is a wasteful number, since it uses less digits than its factorization.

210505610312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384905356 (or 1384905352 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 210505610312 in words is "two hundred ten billion, five hundred five million, six hundred ten thousand, three hundred twelve".