61128203112 has 96 divisors (see below), whose sum is σ = 174328845600. Its totient is φ = 19297014912.

The previous prime is 61128203083. The next prime is 61128203137. The reversal of 61128203112 is 21130282116.

61128203112 is a `hidden beast` number, since 611 + 2 + 8 + 2 + 0 + 31 + 12 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5339058 + ... + 5350494.

It is an arithmetic number, because the mean of its divisors is an integer number (1815925475).

Almost surely, 2^61128203112 is an apocalyptic number.

It is an amenable number.

61128203112 is an abundant number, since it is smaller than the sum of its proper divisors (113200642488).

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

61128203112 is a wasteful number, since it uses less digits than its factorization.

61128203112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15375 (or 15368 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

Adding to 61128203112 its reverse (21130282116), we get a palindrome (82258485228).

The spelling of 61128203112 in words is "sixty-one billion, one hundred twenty-eight million, two hundred three thousand, one hundred twelve".