63494738637 has 8 divisors (see below), whose sum is σ = 92355983520. Its totient is φ = 38481659760.

The previous prime is 63494738623. The next prime is 63494738639. The reversal of 63494738637 is 73683749436.

63494738637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63494738637 - 2⁴ = 63494738621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63494738639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962041462 + ... + 962041527.

It is an arithmetic number, because the mean of its divisors is an integer number (11544497940).

Almost surely, 2^63494738637 is an apocalyptic number.

It is an amenable number.

63494738637 is a deficient number, since it is larger than the sum of its proper divisors (28861244883).

63494738637 is a wasteful number, since it uses less digits than its factorization.

63494738637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924083003.

The product of its digits is 54867456, while the sum is 60.

The spelling of 63494738637 in words is "sixty-three billion, four hundred ninety-four million, seven hundred thirty-eight thousand, six hundred thirty-seven".