651053405412 has 72 divisors (see below), whose sum is σ = 1703659197240. Its totient is φ = 209387727360.

The previous prime is 651053405399. The next prime is 651053405419. The reversal of 651053405412 is 214504350156.

651053405412 is a `hidden beast` number, since 6 + 5 + 105 + 3 + 4 + 0 + 541 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 419523062436 + 231530342976 = 647706^2 + 481176^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (651053405419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1278462 + ... + 1713642.

It is an arithmetic number, because the mean of its divisors is an integer number (23661933295).

Almost surely, 2^651053405412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651053405412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (851829598620).

651053405412 is an abundant number, since it is smaller than the sum of its proper divisors (1052605791828).

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

651053405412 is a wasteful number, since it uses less digits than its factorization.

651053405412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436653 (or 436648 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 651053405412 its reverse (214504350156), we get a palindrome (865557755568).

The spelling of 651053405412 in words is "six hundred fifty-one billion, fifty-three million, four hundred five thousand, four hundred twelve".