51672281781568 has 112 divisors (see below), whose sum is σ = 121209008304384. Its totient is φ = 21395375861760.

The previous prime is 51672281781559. The next prime is 51672281781619. The reversal of 51672281781568 is 86518718227615.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 11764255 + ... + 15548062.

It is an arithmetic number, because the mean of its divisors is an integer number (1082223288432).

Almost surely, 2^{51672281781568} is an apocalyptic number.

It is an amenable number.

51672281781568 is an abundant number, since it is smaller than the sum of its proper divisors (69536726522816).

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

51672281781568 is a wasteful number, since it uses less digits than its factorization.

51672281781568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27312480 (or 27312470 counting only the distinct ones).

The product of its digits is 90316800, while the sum is 67.

The spelling of 51672281781568 in words is "fifty-one trillion, six hundred seventy-two billion, two hundred eighty-one million, seven hundred eighty-one thousand, five hundred sixty-eight".