512421606436 has 6 divisors (see below), whose sum is σ = 896737811270. Its totient is φ = 256210803216.

The previous prime is 512421606421. The next prime is 512421606449. The reversal of 512421606436 is 634606124215.

It can be written as a sum of positive squares in only one way, i.e., 510858985536 + 1562620900 = 714744^2 + 39530^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64052700801 + ... + 64052700808.

Almost surely, 2^512421606436 is an apocalyptic number.

It is an amenable number.

512421606436 is a deficient number, since it is larger than the sum of its proper divisors (384316204834).

512421606436 is a wasteful number, since it uses less digits than its factorization.

512421606436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128105401613 (or 128105401611 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 512421606436 in words is "five hundred twelve billion, four hundred twenty-one million, six hundred six thousand, four hundred thirty-six".