64762566977 has 2 divisors, whose sum is σ = 64762566978. Its totient is φ = 64762566976.

The previous prime is 64762566949. The next prime is 64762566989. The reversal of 64762566977 is 77966526746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41391495601 + 23371071376 = 203449^2 + 152876^2 .

It is a cyclic number.

It is not a de Polignac number, because 64762566977 - 2¹⁰ = 64762565953 is a prime.

It is not a weakly prime, because it can be changed into another prime (64762566377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32381283488 + 32381283489.

It is an arithmetic number, because the mean of its divisors is an integer number (32381283489).

Almost surely, 2^64762566977 is an apocalyptic number.

It is an amenable number.

64762566977 is a deficient number, since it is larger than the sum of its proper divisors (1).

64762566977 is an equidigital number, since it uses as much as digits as its factorization.

64762566977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 160030080, while the sum is 65.

The spelling of 64762566977 in words is "sixty-four billion, seven hundred sixty-two million, five hundred sixty-six thousand, nine hundred seventy-seven".