651246212116 has 12 divisors (see below), whose sum is σ = 1140010568788. Its totient is φ = 325528906752.

The previous prime is 651246212047. The next prime is 651246212147. The reversal of 651246212116 is 611212642156.

It can be written as a sum of positive squares in 2 ways, for example, as 51157392400 + 600088819716 = 226180^2 + 774654^2 .

It is a congruent 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, 23534271 + ... + 23561926.

Almost surely, 2^651246212116 is an apocalyptic number.

It is an amenable number.

651246212116 is a deficient number, since it is larger than the sum of its proper divisors (488764356672).

651246212116 is a wasteful number, since it uses less digits than its factorization.

651246212116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47099658 (or 47099656 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The spelling of 651246212116 in words is "six hundred fifty-one billion, two hundred forty-six million, two hundred twelve thousand, one hundred sixteen".