51253251047424 has 128 divisors (see below), whose sum is σ = 151859169984000. Its totient is φ = 17084416720896.

The previous prime is 51253251047423. The next prime is 51253251047437. The reversal of 51253251047424 is 42474015235215.

51253251047424 is a `hidden beast` number, since 5 + 1 + 2 + 53 + 2 + 510 + 47 + 42 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 51253251047424.

It is not an unprimeable number, because it can be changed into a prime (51253251047423) 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, 28080544 + ... + 29850015.

It is an arithmetic number, because the mean of its divisors is an integer number (1186399765500).

Almost surely, 2^{51253251047424} is an apocalyptic number.

51253251047424 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51253251047424 is an abundant number, since it is smaller than the sum of its proper divisors (100605918936576).

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

51253251047424 is an frugal number, since it uses more digits than its factorization.

51253251047424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57930598 (or 57930564 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 45.

The spelling of 51253251047424 in words is "fifty-one trillion, two hundred fifty-three billion, two hundred fifty-one million, forty-seven thousand, four hundred twenty-four".