51550616550650 has 24 divisors (see below), whose sum is σ = 109581882039840. Its totient is φ = 17674497102960.

The previous prime is 51550616550623. The next prime is 51550616550659. The reversal of 51550616550650 is 5605561605515.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is not an unprimeable number, because it can be changed into a prime (51550616550659) 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, 73643737580 + ... + 73643738279.

It is an arithmetic number, because the mean of its divisors is an integer number (4565911751660).

Almost surely, 2^{51550616550650} is an apocalyptic number.

51550616550650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51550616550650 is an abundant number, since it is smaller than the sum of its proper divisors (58031265489190).

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

51550616550650 is a wasteful number, since it uses less digits than its factorization.

51550616550650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147287475878 (or 147287475873 counting only the distinct ones).

The product of its (nonzero) digits is 3375000, while the sum is 50.

The spelling of 51550616550650 in words is "fifty-one trillion, five hundred fifty billion, six hundred sixteen million, five hundred fifty thousand, six hundred fifty".