16033781232 has 120 divisors (see below), whose sum is σ = 53051113440. Its totient is φ = 4423104000.

The previous prime is 16033781227. The next prime is 16033781249. The reversal of 16033781232 is 23218733061.

16033781232 is a `hidden beast` number, since 1 + 603 + 3 + 7 + 8 + 12 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245019 + ... + 303482.

It is an arithmetic number, because the mean of its divisors is an integer number (442092612).

Almost surely, 2^16033781232 is an apocalyptic number.

16033781232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16033781232 is an abundant number, since it is smaller than the sum of its proper divisors (37017332208).

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

16033781232 is a wasteful number, since it uses less digits than its factorization.

16033781232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548551 (or 548542 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 16033781232 in words is "sixteen billion, thirty-three million, seven hundred eighty-one thousand, two hundred thirty-two".