64649146363 has 2 divisors, whose sum is σ = 64649146364. Its totient is φ = 64649146362.

The previous prime is 64649146357. The next prime is 64649146381. The reversal of 64649146363 is 36364194646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64649146363 - 2²¹ = 64647049211 is a prime.

It is a super-2 number, since 2×64649146363² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64649146363.

It is not a weakly prime, because it can be changed into another prime (64649146663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32324573181 + 32324573182.

It is an arithmetic number, because the mean of its divisors is an integer number (32324573182).

Almost surely, 2^64649146363 is an apocalyptic number.

64649146363 is a deficient number, since it is larger than the sum of its proper divisors (1).

64649146363 is an equidigital number, since it uses as much as digits as its factorization.

64649146363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6718464, while the sum is 52.

The spelling of 64649146363 in words is "sixty-four billion, six hundred forty-nine million, one hundred forty-six thousand, three hundred sixty-three".