51063550320 has 160 divisors (see below), whose sum is σ = 172374681600. Its totient is φ = 12455396352.

The previous prime is 51063550313. The next prime is 51063550357. The reversal of 51063550320 is 2305536015.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60832 + ... + 325311.

It is an arithmetic number, because the mean of its divisors is an integer number (1077341760).

Almost surely, 2^51063550320 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 51063550320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86187340800).

51063550320 is an abundant number, since it is smaller than the sum of its proper divisors (121311131280).

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

51063550320 is a wasteful number, since it uses less digits than its factorization.

51063550320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386207 (or 386201 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The spelling of 51063550320 in words is "fifty-one billion, sixty-three million, five hundred fifty thousand, three hundred twenty".