32878457766 has 160 divisors (see below), whose sum is σ = 93727180800. Its totient is φ = 8539700400.

The previous prime is 32878457747. The next prime is 32878457783. The reversal of 32878457766 is 66775487823.

32878457766 is a `hidden beast` number, since 32 + 87 + 8 + 457 + 76 + 6 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 584331 + ... + 638121.

It is an arithmetic number, because the mean of its divisors is an integer number (585794880).

Almost surely, 2^32878457766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32878457766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46863590400).

32878457766 is an abundant number, since it is smaller than the sum of its proper divisors (60848723034).

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

32878457766 is a wasteful number, since it uses less digits than its factorization.

32878457766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53837 (or 53814 counting only the distinct ones).

The product of its digits is 94832640, while the sum is 63.

The spelling of 32878457766 in words is "thirty-two billion, eight hundred seventy-eight million, four hundred fifty-seven thousand, seven hundred sixty-six".