51956954000 has 640 divisors, whose sum is σ = 158775552000. Its totient is φ = 16392499200.

The previous prime is 51956953999. The next prime is 51956954003. The reversal of 51956954000 is 45965915.

It is not an unprimeable number, because it can be changed into a prime (51956954003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 583785956 + ... + 583786044.

It is an arithmetic number, because the mean of its divisors is an integer number (248086800).

Almost surely, 2^51956954000 is an apocalyptic number.

51956954000 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 51956954000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79387776000).

51956954000 is an abundant number, since it is smaller than the sum of its proper divisors (106818598000).

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

51956954000 is a wasteful number, since it uses less digits than its factorization.

51956954000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 44.

The spelling of 51956954000 in words is "fifty-one billion, nine hundred fifty-six million, nine hundred fifty-four thousand".