51641098650 has 36 divisors (see below), whose sum is σ = 138742419582. Its totient is φ = 13770959520.

The previous prime is 51641098633. The next prime is 51641098651. The reversal of 51641098650 is 5689014615.

51641098650 is a `hidden beast` number, since 516 + 4 + 1 + 0 + 9 + 86 + 50 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 44758902969 + 6882195681 = 211563^2 + 82959^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51641098596 and 51641098605.

It is not an unprimeable number, because it can be changed into a prime (51641098651) 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 17 ways as a sum of consecutive naturals, for example, 57378549 + ... + 57379448.

Almost surely, 2^51641098650 is an apocalyptic number.

51641098650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51641098650 is an abundant number, since it is smaller than the sum of its proper divisors (87101320932).

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

51641098650 is a wasteful number, since it uses less digits than its factorization.

51641098650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114758015 (or 114758007 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 51641098650 in words is "fifty-one billion, six hundred forty-one million, ninety-eight thousand, six hundred fifty".