32666993856 has 504 divisors, whose sum is σ = 114035098320. Its totient is φ = 8903430144.

The previous prime is 32666993851. The next prime is 32666993869. The reversal of 32666993856 is 65839966623.

It is a tau number, because it is divible by the number of its divisors (504).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 32666993793 and 32666993802.

It is not an unprimeable number, because it can be changed into a prime (32666993851) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 87578886 + ... + 87579258.

Almost surely, 2^32666993856 is an apocalyptic number.

32666993856 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32666993856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57017549160).

32666993856 is an abundant number, since it is smaller than the sum of its proper divisors (81368104464).

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

32666993856 is a wasteful number, since it uses less digits than its factorization.

32666993856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541 (or 521 counting only the distinct ones).

The product of its digits is 75582720, while the sum is 63.

The spelling of 32666993856 in words is "thirty-two billion, six hundred sixty-six million, nine hundred ninety-three thousand, eight hundred fifty-six".