51789281211528 has 128 divisors (see below), whose sum is σ = 155760310118400. Its totient is φ = 14017874701824.

The previous prime is 51789281211523. The next prime is 51789281211533. The reversal of 51789281211528 is 82511218298715.

It is a Cunningham number, because it is equal to 7196477²-1.

It is an interprime number because it is at equal distance from previous prime (51789281211523) and next prime (51789281211533).

It is not an unprimeable number, because it can be changed into a prime (51789281211523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201372876 + ... + 201629892.

It is an arithmetic number, because the mean of its divisors is an integer number (1216877422800).

Almost surely, 2^{51789281211528} is an apocalyptic number.

It is an amenable number.

51789281211528 is an abundant number, since it is smaller than the sum of its proper divisors (103971028906872).

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

51789281211528 is a wasteful number, since it uses less digits than its factorization.

51789281211528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320179 (or 320175 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 60.

The spelling of 51789281211528 in words is "fifty-one trillion, seven hundred eighty-nine billion, two hundred eighty-one million, two hundred eleven thousand, five hundred twenty-eight".