61604133332 has 48 divisors (see below), whose sum is σ = 124324773888. Its totient is φ = 26163012960.

The previous prime is 61604133313. The next prime is 61604133391. The reversal of 61604133332 is 23333140616.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3144407 + ... + 3163937.

It is an arithmetic number, because the mean of its divisors is an integer number (2590099456).

Almost surely, 2^61604133332 is an apocalyptic number.

It is an amenable number.

61604133332 is an abundant number, since it is smaller than the sum of its proper divisors (62720640556).

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

61604133332 is a wasteful number, since it uses less digits than its factorization.

61604133332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20556 (or 20554 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 32.

Adding to 61604133332 its reverse (23333140616), we get a palindrome (84937273948).

The spelling of 61604133332 in words is "sixty-one billion, six hundred four million, one hundred thirty-three thousand, three hundred thirty-two".