63472636299666 has 96 divisors (see below), whose sum is σ = 142761579424128. Its totient is φ = 18793526400000.

The previous prime is 63472636299617. The next prime is 63472636299673. The reversal of 63472636299666 is 66699263627436.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1941346 + ... + 11433026.

It is an arithmetic number, because the mean of its divisors is an integer number (1487099785668).

Almost surely, 2^{63472636299666} is an apocalyptic number.

63472636299666 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 63472636299666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71380789712064).

63472636299666 is an abundant number, since it is smaller than the sum of its proper divisors (79288943124462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63472636299666 is a wasteful number, since it uses less digits than its factorization.

63472636299666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9491920 (or 9491909 counting only the distinct ones).

The product of its digits is 3809369088, while the sum is 75.

The spelling of 63472636299666 in words is "sixty-three trillion, four hundred seventy-two billion, six hundred thirty-six million, two hundred ninety-nine thousand, six hundred sixty-six".