50355136661 has 4 divisors (see below), whose sum is σ = 50355683532. Its totient is φ = 50354589792.

The previous prime is 50355136621. The next prime is 50355136673. The reversal of 50355136661 is 16663155305.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 712623025 + 49642513636 = 26695^2 + 222806^2 .

It is a cyclic number.

It is not a de Polignac number, because 50355136661 - 2⁶ = 50355136597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50355136621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97646 + ... + 332031.

It is an arithmetic number, because the mean of its divisors is an integer number (12588920883).

Almost surely, 2^50355136661 is an apocalyptic number.

It is an amenable number.

50355136661 is a deficient number, since it is larger than the sum of its proper divisors (546871).

50355136661 is a wasteful number, since it uses less digits than its factorization.

50355136661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546870.

The product of its (nonzero) digits is 243000, while the sum is 41.

The spelling of 50355136661 in words is "fifty billion, three hundred fifty-five million, one hundred thirty-six thousand, six hundred sixty-one".