51003643000 has 64 divisors (see below), whose sum is σ = 120507491520. Its totient is φ = 20203344000.

The previous prime is 51003642983. The next prime is 51003643003. The reversal of 51003643000 is 34630015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51003643003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144591 + ... + 350590.

It is an arithmetic number, because the mean of its divisors is an integer number (1882929555).

Almost surely, 2^51003643000 is an apocalyptic number.

51003643000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51003643000 is an abundant number, since it is smaller than the sum of its proper divisors (69503848520).

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

51003643000 is a wasteful number, since it uses less digits than its factorization.

51003643000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495305 (or 495291 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

It can be divided in two parts, 5100 and 3643000, that added together give a square (3648100 = 1910²).

The spelling of 51003643000 in words is "fifty-one billion, three million, six hundred forty-three thousand".