61328393977012 has 36 divisors (see below), whose sum is σ = 113868398041216. Its totient is φ = 28893195278640.

The previous prime is 61328393976961. The next prime is 61328393977043. The reversal of 61328393977012 is 21077939382316.

It is a happy number.

61328393977012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61328393977012² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216150564 + ... + 216434107.

Almost surely, 2^{61328393977012} is an apocalyptic number.

It is an amenable number.

61328393977012 is a deficient number, since it is larger than the sum of its proper divisors (52540004064204).

61328393977012 is a wasteful number, since it uses less digits than its factorization.

61328393977012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432584788 (or 432584763 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 61.

The spelling of 61328393977012 in words is "sixty-one trillion, three hundred twenty-eight billion, three hundred ninety-three million, nine hundred seventy-seven thousand, twelve".