651603231212 has 24 divisors (see below), whose sum is σ = 1214053102080. Its totient is φ = 304942682880.

The previous prime is 651603231211. The next prime is 651603231281. The reversal of 651603231212 is 212132306156.

It is a happy number.

651603231212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (651603231211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26458412 + ... + 26483027.

It is an arithmetic number, because the mean of its divisors is an integer number (50585545920).

Almost surely, 2^651603231212 is an apocalyptic number.

It is an amenable number.

651603231212 is a deficient number, since it is larger than the sum of its proper divisors (562449870868).

651603231212 is a wasteful number, since it uses less digits than its factorization.

651603231212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52941641 (or 52941639 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 651603231212 its reverse (212132306156), we get a palindrome (863735537368).

The spelling of 651603231212 in words is "six hundred fifty-one billion, six hundred three million, two hundred thirty-one thousand, two hundred twelve".