64649146763 has 4 divisors (see below), whose sum is σ = 64651512288. Its totient is φ = 64646781240.

The previous prime is 64649146663. The next prime is 64649146777. The reversal of 64649146763 is 36764194646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64649146763 - 2¹² = 64649142667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64649146699 and 64649146708.

It is not an unprimeable number, because it can be changed into a prime (64649146363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1141283 + ... + 1196588.

It is an arithmetic number, because the mean of its divisors is an integer number (16162878072).

Almost surely, 2^64649146763 is an apocalyptic number.

64649146763 is a deficient number, since it is larger than the sum of its proper divisors (2365525).

64649146763 is a wasteful number, since it uses less digits than its factorization.

64649146763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365524.

The product of its digits is 15676416, while the sum is 56.

The spelling of 64649146763 in words is "sixty-four billion, six hundred forty-nine million, one hundred forty-six thousand, seven hundred sixty-three".