63493612949 has 4 divisors (see below), whose sum is σ = 68377737036. Its totient is φ = 58609488864.

The previous prime is 63493612937. The next prime is 63493612951. The reversal of 63493612949 is 94921639436.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22355632324 + 41137980625 = 149518^2 + 202825^2 .

It is a cyclic number.

It is not a de Polignac number, because 63493612949 - 2²⁸ = 63225177493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63493612894 and 63493612903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63493614949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2442062024 + ... + 2442062049.

It is an arithmetic number, because the mean of its divisors is an integer number (17094434259).

Almost surely, 2^63493612949 is an apocalyptic number.

It is an amenable number.

63493612949 is a deficient number, since it is larger than the sum of its proper divisors (4884124087).

63493612949 is a wasteful number, since it uses less digits than its factorization.

63493612949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4884124086.

The product of its digits is 7558272, while the sum is 56.

The spelling of 63493612949 in words is "sixty-three billion, four hundred ninety-three million, six hundred twelve thousand, nine hundred forty-nine".