63573066769 has 9 divisors (see below), whose sum is σ = 64318099953. Its totient is φ = 62836574592.

The previous prime is 63573066757. The next prime is 63573066787. The reversal of 63573066769 is 96766037536.

The square root of 63573066769 is 252137.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 11537982225 + 52035084544 = 107415^2 + 228112^2 .

It is not a de Polignac number, because 63573066769 - 2¹⁷ = 63572935697 is a prime.

It is a super-2 number, since 2×63573066769² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63573066709) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 22438777 + ... + 22441609.

Almost surely, 2^63573066769 is an apocalyptic number.

63573066769 is the 252137-th square number.

63573066769 is the 126069-th centered octagonal number.

It is an amenable number.

63573066769 is a deficient number, since it is larger than the sum of its proper divisors (745033184).

63573066769 is an frugal number, since it uses more digits than its factorization.

63573066769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5844 (or 2922 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 58.

The spelling of 63573066769 in words is "sixty-three billion, five hundred seventy-three million, sixty-six thousand, seven hundred sixty-nine".