63929582649 has 27 divisors (see below), whose sum is σ = 92983715877. Its totient is φ = 42325918200.

The previous prime is 63929582627. The next prime is 63929582671. The reversal of 63929582649 is 94628592936.

The square root of 63929582649 is 252843.

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

63929582649 is a `hidden beast` number, since 6 + 3 + 9 + 2 + 9 + 582 + 6 + 49 = 666.

It is an interprime number because it is at equal distance from previous prime (63929582627) and next prime (63929582671).

It is not a de Polignac number, because 63929582649 - 2¹¹ = 63929580601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63929582749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 205561204 + ... + 205561514.

Almost surely, 2^63929582649 is an apocalyptic number.

63929582649 is the 252843-rd square number.

63929582649 is the 126422-nd centered octagonal number.

It is an amenable number.

63929582649 is a deficient number, since it is larger than the sum of its proper divisors (29054133228).

63929582649 is an frugal number, since it uses more digits than its factorization.

63929582649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170 (or 585 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 63.

The spelling of 63929582649 in words is "sixty-three billion, nine hundred twenty-nine million, five hundred eighty-two thousand, six hundred forty-nine".