51455103320 has 64 divisors (see below), whose sum is σ = 118645430400. Its totient is φ = 20071966720.

The previous prime is 51455103319. The next prime is 51455103331. The reversal of 51455103320 is 2330155415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5582876 + ... + 5592084.

It is an arithmetic number, because the mean of its divisors is an integer number (1853834850).

Almost surely, 2^51455103320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51455103320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59322715200).

51455103320 is an abundant number, since it is smaller than the sum of its proper divisors (67190327080).

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

51455103320 is a wasteful number, since it uses less digits than its factorization.

51455103320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12668 (or 12664 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 51455103320 its reverse (2330155415), we get a palindrome (53785258735).

The spelling of 51455103320 in words is "fifty-one billion, four hundred fifty-five million, one hundred three thousand, three hundred twenty".