63769949973 has 10 divisors (see below), whose sum is σ = 95261283414. Its totient is φ = 42513299928.

The previous prime is 63769949951. The next prime is 63769949977. The reversal of 63769949973 is 37994996736.

63769949973 is a `hidden beast` number, since 6 + 3 + 7 + 69 + 9 + 499 + 73 = 666.

It can be written as a sum of positive squares in only one way, i.e., 32976017649 + 30793932324 = 181593^2 + 175482^2 .

It is not a de Polignac number, because 63769949973 - 2¹⁴ = 63769933589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63769949977) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 393641586 + ... + 393641747.

Almost surely, 2^63769949973 is an apocalyptic number.

It is an amenable number.

63769949973 is a deficient number, since it is larger than the sum of its proper divisors (31491333441).

63769949973 is an equidigital number, since it uses as much as digits as its factorization.

63769949973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787283345 (or 787283336 counting only the distinct ones).

The product of its digits is 416649744, while the sum is 72.

The spelling of 63769949973 in words is "sixty-three billion, seven hundred sixty-nine million, nine hundred forty-nine thousand, nine hundred seventy-three".