651235312012 has 12 divisors (see below), whose sum is σ = 1139670088200. Its totient is φ = 325615286816.

The previous prime is 651235311997. The next prime is 651235312031. The reversal of 651235312012 is 210213532156.

It is a super-2 number, since 2×651235312012² (a number of 24 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, 121848 + ... + 1147744.

It is an arithmetic number, because the mean of its divisors is an integer number (94972507350).

Almost surely, 2^651235312012 is an apocalyptic number.

It is an amenable number.

651235312012 is a deficient number, since it is larger than the sum of its proper divisors (488434776188).

651235312012 is a wasteful number, since it uses less digits than its factorization.

651235312012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184600 (or 1184598 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 651235312012 its reverse (210213532156), we get a palindrome (861448844168).

The spelling of 651235312012 in words is "six hundred fifty-one billion, two hundred thirty-five million, three hundred twelve thousand, twelve".