651123356412 has 96 divisors (see below), whose sum is σ = 1535237544960. Its totient is φ = 214778511360.

The previous prime is 651123356407. The next prime is 651123356449. The reversal of 651123356412 is 214653321156.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 425292087 + ... + 425293617.

It is an arithmetic number, because the mean of its divisors is an integer number (15992057760).

Almost surely, 2^651123356412 is an apocalyptic number.

It is an amenable number.

651123356412 is an abundant number, since it is smaller than the sum of its proper divisors (884114188548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

651123356412 is a wasteful number, since it uses less digits than its factorization.

651123356412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611 (or 2609 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

Adding to 651123356412 its reverse (214653321156), we get a palindrome (865776677568).

The spelling of 651123356412 in words is "six hundred fifty-one billion, one hundred twenty-three million, three hundred fifty-six thousand, four hundred twelve".