51245565205350 has 96 divisors (see below), whose sum is σ = 127668256521120. Its totient is φ = 13603305047040.

The previous prime is 51245565205273. The next prime is 51245565205369. The reversal of 51245565205350 is 5350256554215.

It is a super-2 number, since 2×51245565205350² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51245565205350.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37879386 + ... + 39208914.

It is an arithmetic number, because the mean of its divisors is an integer number (1329877672095).

Almost surely, 2^{51245565205350} is an apocalyptic number.

51245565205350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51245565205350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63834128260560).

51245565205350 is an abundant number, since it is smaller than the sum of its proper divisors (76422691315770).

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

51245565205350 is a wasteful number, since it uses less digits than its factorization.

51245565205350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330714 (or 1330709 counting only the distinct ones).

The product of its (nonzero) digits is 4500000, while the sum is 48.

The spelling of 51245565205350 in words is "fifty-one trillion, two hundred forty-five billion, five hundred sixty-five million, two hundred five thousand, three hundred fifty".