63532636989 has 8 divisors (see below), whose sum is σ = 86999647200. Its totient is φ = 41210359056.

The previous prime is 63532636967. The next prime is 63532637017. The reversal of 63532636989 is 98963623536.

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

It is not a de Polignac number, because 63532636989 - 2⁵ = 63532636957 is a prime.

It is a super-2 number, since 2×63532636989² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63532636919) 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, 286182939 + ... + 286183160.

It is an arithmetic number, because the mean of its divisors is an integer number (10874955900).

Almost surely, 2^63532636989 is an apocalyptic number.

It is an amenable number.

63532636989 is a deficient number, since it is larger than the sum of its proper divisors (23467010211).

63532636989 is a wasteful number, since it uses less digits than its factorization.

63532636989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572366139.

The product of its digits is 37791360, while the sum is 60.

The spelling of 63532636989 in words is "sixty-three billion, five hundred thirty-two million, six hundred thirty-six thousand, nine hundred eighty-nine".