51321529000 has 64 divisors (see below), whose sum is σ = 137248450560. Its totient is φ = 17595950400.

The previous prime is 51321528961. The next prime is 51321529019. The reversal of 51321529000 is 92512315.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 51321529000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3658824 + ... + 3672823.

It is an arithmetic number, because the mean of its divisors is an integer number (2144507040).

Almost surely, 2^51321529000 is an apocalyptic number.

51321529000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51321529000 is an abundant number, since it is smaller than the sum of its proper divisors (85926921560).

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

51321529000 is a wasteful number, since it uses less digits than its factorization.

51321529000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7331675 (or 7331661 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The spelling of 51321529000 in words is "fifty-one billion, three hundred twenty-one million, five hundred twenty-nine thousand".