51551110650 has 96 divisors (see below), whose sum is σ = 144927599040. Its totient is φ = 12021626880.

The previous prime is 51551110613. The next prime is 51551110679. The reversal of 51551110650 is 5601115515.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 658647 + ... + 732746.

It is an arithmetic number, because the mean of its divisors is an integer number (1509662490).

Almost surely, 2^51551110650 is an apocalyptic number.

51551110650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51551110650 is an abundant number, since it is smaller than the sum of its proper divisors (93376488390).

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

51551110650 is a wasteful number, since it uses less digits than its factorization.

51551110650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391440 (or 1391435 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 30.

The spelling of 51551110650 in words is "fifty-one billion, five hundred fifty-one million, one hundred ten thousand, six hundred fifty".