51351773000 has 128 divisors (see below), whose sum is σ = 131361834240. Its totient is φ = 18634240000.

The previous prime is 51351772999. The next prime is 51351773003. The reversal of 51351773000 is 37715315.

It is not an unprimeable number, because it can be changed into a prime (51351773003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5528360 + ... + 5537640.

It is an arithmetic number, because the mean of its divisors is an integer number (1026264330).

Almost surely, 2^51351773000 is an apocalyptic number.

51351773000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51351773000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65680917120).

51351773000 is an abundant number, since it is smaller than the sum of its proper divisors (80010061240).

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

51351773000 is a wasteful number, since it uses less digits than its factorization.

51351773000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9816 (or 9802 counting only the distinct ones).

The product of its (nonzero) digits is 11025, while the sum is 32.

The spelling of 51351773000 in words is "fifty-one billion, three hundred fifty-one million, seven hundred seventy-three thousand".