51921342700 has 36 divisors (see below), whose sum is σ = 113784873552. Its totient is φ = 20562904000.

The previous prime is 51921342691. The next prime is 51921342701. The reversal of 51921342700 is 724312915.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51921342701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2560264 + ... + 2580463.

It is an arithmetic number, because the mean of its divisors is an integer number (3160690932).

Almost surely, 2^51921342700 is an apocalyptic number.

51921342700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51921342700 is an abundant number, since it is smaller than the sum of its proper divisors (61863530852).

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

51921342700 is a wasteful number, since it uses less digits than its factorization.

51921342700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5140842 (or 5140835 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 51921342700 in words is "fifty-one billion, nine hundred twenty-one million, three hundred forty-two thousand, seven hundred".