651438253453 has 8 divisors (see below), whose sum is σ = 714785660568. Its totient is φ = 589981813824.

The previous prime is 651438253447. The next prime is 651438253489. The reversal of 651438253453 is 354352834156.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 178406553924 + 473031699529 = 422382^2 + 687773^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 651438253453 - 2¹⁷ = 651438122381 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 651438253397 and 651438253406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651438256453) 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, 472741150 + ... + 472742527.

It is an arithmetic number, because the mean of its divisors is an integer number (89348207571).

Almost surely, 2^651438253453 is an apocalyptic number.

It is an amenable number.

651438253453 is a deficient number, since it is larger than the sum of its proper divisors (63347407115).

651438253453 is a wasteful number, since it uses less digits than its factorization.

651438253453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945483743.

The product of its digits is 5184000, while the sum is 49.

The spelling of 651438253453 in words is "six hundred fifty-one billion, four hundred thirty-eight million, two hundred fifty-three thousand, four hundred fifty-three".