51241884736 has 56 divisors (see below), whose sum is σ = 121261875840. Its totient is φ = 21005985792.

The previous prime is 51241884731. The next prime is 51241884737. The reversal of 51241884736 is 63748814215.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 51241884736.

It is not an unprimeable number, because it can be changed into a prime (51241884731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2476201 + ... + 2496808.

It is an arithmetic number, because the mean of its divisors is an integer number (2165390640).

Almost surely, 2^51241884736 is an apocalyptic number.

51241884736 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51241884736 is an abundant number, since it is smaller than the sum of its proper divisors (70019991104).

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

51241884736 is a wasteful number, since it uses less digits than its factorization.

51241884736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4973051 (or 4973041 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The spelling of 51241884736 in words is "fifty-one billion, two hundred forty-one million, eight hundred eighty-four thousand, seven hundred thirty-six".