64428763723033 has 2 divisors, whose sum is σ = 64428763723034. Its totient is φ = 64428763723032.

The previous prime is 64428763722943. The next prime is 64428763723067. The reversal of 64428763723033 is 33032736782446.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42468265165824 + 21960498557209 = 6516768^2 + 4686203^2 .

It is a cyclic number.

It is not a de Polignac number, because 64428763723033 - 2³⁷ = 64291324769561 is a prime.

It is not a weakly prime, because it can be changed into another prime (64428763723133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32214381861516 + 32214381861517.

It is an arithmetic number, because the mean of its divisors is an integer number (32214381861517).

Almost surely, 2^{64428763723033} is an apocalyptic number.

It is an amenable number.

64428763723033 is a deficient number, since it is larger than the sum of its proper divisors (1).

64428763723033 is an equidigital number, since it uses as much as digits as its factorization.

64428763723033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73156608, while the sum is 58.

The spelling of 64428763723033 in words is "sixty-four trillion, four hundred twenty-eight billion, seven hundred sixty-three million, seven hundred twenty-three thousand, thirty-three".