51198786912 has 96 divisors (see below), whose sum is σ = 165411493632. Its totient is φ = 13502974464.

The previous prime is 51198786893. The next prime is 51198786913. The reversal of 51198786912 is 21968789115.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51198786913) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2921598 + ... + 2939069.

It is an arithmetic number, because the mean of its divisors is an integer number (1723036392).

Almost surely, 2^51198786912 is an apocalyptic number.

51198786912 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51198786912 is an abundant number, since it is smaller than the sum of its proper divisors (114212706720).

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

51198786912 is a wasteful number, since it uses less digits than its factorization.

51198786912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5860700 (or 5860692 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 57.

The spelling of 51198786912 in words is "fifty-one billion, one hundred ninety-eight million, seven hundred eighty-six thousand, nine hundred twelve".