561215630512 has 20 divisors (see below), whose sum is σ = 1110490504416. Its totient is φ = 274637435840.

The previous prime is 561215630491. The next prime is 561215630539. The reversal of 561215630512 is 215036512165.

It is a happy number.

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, 373147939 + ... + 373149442.

Almost surely, 2^561215630512 is an apocalyptic number.

It is an amenable number.

561215630512 is a deficient number, since it is larger than the sum of its proper divisors (549274873904).

561215630512 is a wasteful number, since it uses less digits than its factorization.

561215630512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746297436 (or 746297430 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 561215630512 in words is "five hundred sixty-one billion, two hundred fifteen million, six hundred thirty thousand, five hundred twelve".