53550563647761 has 12 divisors (see below), whose sum is σ = 77350880467588. Its totient is φ = 35700345160704.

The previous prime is 53550563647753. The next prime is 53550563647769. The reversal of 53550563647761 is 16774636505535.

53550563647761 is a `hidden beast` number, since 5 + 3 + 5 + 5 + 0 + 563 + 6 + 4 + 7 + 7 + 61 = 666.

It is an interprime number because it is at equal distance from previous prime (53550563647753) and next prime (53550563647769).

It can be written as a sum of positive squares in 2 ways, for example, as 36809168507136 + 16741395140625 = 6067056^2 + 4091625^2 .

It is not a de Polignac number, because 53550563647761 - 2³ = 53550563647753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53550563647769) 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 11 ways as a sum of consecutive naturals, for example, 14605041 + ... + 17899953.

Almost surely, 2^{53550563647761} is an apocalyptic number.

It is an amenable number.

53550563647761 is a deficient number, since it is larger than the sum of its proper divisors (23800316819827).

53550563647761 is a wasteful number, since it uses less digits than its factorization.

53550563647761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100752 (or 5100749 counting only the distinct ones).

The product of its (nonzero) digits is 238140000, while the sum is 63.

The spelling of 53550563647761 in words is "fifty-three trillion, five hundred fifty billion, five hundred sixty-three million, six hundred forty-seven thousand, seven hundred sixty-one".