51563360523450 has 192 divisors, whose sum is σ = 136568632476672. Its totient is φ = 12843848371200.

The previous prime is 51563360523449. The next prime is 51563360523503. The reversal of 51563360523450 is 5432506336515.

It is a self number, because there is not a number n which added to its sum of digits gives 51563360523450.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 767084242 + ... + 767151458.

It is an arithmetic number, because the mean of its divisors is an integer number (711294960816).

Almost surely, 2^{51563360523450} is an apocalyptic number.

51563360523450 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 51563360523450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68284316238336).

51563360523450 is an abundant number, since it is smaller than the sum of its proper divisors (85005271953222).

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

51563360523450 is a wasteful number, since it uses less digits than its factorization.

51563360523450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72469 (or 72464 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 48.

Adding to 51563360523450 its reverse (5432506336515), we get a palindrome (56995866859965).

The spelling of 51563360523450 in words is "fifty-one trillion, five hundred sixty-three billion, three hundred sixty million, five hundred twenty-three thousand, four hundred fifty".