649751606453 has 8 divisors (see below), whose sum is σ = 651138681528. Its totient is φ = 648365598144.

The previous prime is 649751606431. The next prime is 649751606489. The reversal of 649751606453 is 354606157946.

649751606453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 64162409809 + 585589196644 = 253303^2 + 765238^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 649751606453 - 2¹⁰ = 649751605429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649751608453) 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, 958775 + ... + 1489547.

It is an arithmetic number, because the mean of its divisors is an integer number (81392335191).

Almost surely, 2^649751606453 is an apocalyptic number.

It is an amenable number.

649751606453 is a deficient number, since it is larger than the sum of its proper divisors (1387075075).

649751606453 is a wasteful number, since it uses less digits than its factorization.

649751606453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533383.

The product of its (nonzero) digits is 16329600, while the sum is 56.

The spelling of 649751606453 in words is "six hundred forty-nine billion, seven hundred fifty-one million, six hundred six thousand, four hundred fifty-three".