32972738778 has 24 divisors (see below), whose sum is σ = 81646782048. Its totient is φ = 9420782472.

The previous prime is 32972738717. The next prime is 32972738789. The reversal of 32972738778 is 87783727923.

32972738778 is a `hidden beast` number, since 3 + 297 + 273 + 8 + 7 + 78 = 666.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130844076 + ... + 130844327.

It is an arithmetic number, because the mean of its divisors is an integer number (3401949252).

Almost surely, 2^32972738778 is an apocalyptic number.

32972738778 is an abundant number, since it is smaller than the sum of its proper divisors (48674043270).

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

32972738778 is a wasteful number, since it uses less digits than its factorization.

32972738778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261688418 (or 261688415 counting only the distinct ones).

The product of its digits is 49787136, while the sum is 63.

The spelling of 32972738778 in words is "thirty-two billion, nine hundred seventy-two million, seven hundred thirty-eight thousand, seven hundred seventy-eight".