50561155647 has 12 divisors (see below), whose sum is σ = 74731217704. Its totient is φ = 32923542960.

The previous prime is 50561155633. The next prime is 50561155669. The reversal of 50561155647 is 74655116505.

It is a happy number.

50561155647 is a `hidden beast` number, since 5 + 0 + 56 + 1 + 1 + 556 + 47 = 666.

It is not a de Polignac number, because 50561155647 - 2¹⁴ = 50561139263 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 (50561155627) 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, 65324104 + ... + 65324877.

Almost surely, 2^50561155647 is an apocalyptic number.

50561155647 is a deficient number, since it is larger than the sum of its proper divisors (24170062057).

50561155647 is a wasteful number, since it uses less digits than its factorization.

50561155647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130649030 (or 130649027 counting only the distinct ones).

The product of its (nonzero) digits is 630000, while the sum is 45.

The spelling of 50561155647 in words is "fifty billion, five hundred sixty-one million, one hundred fifty-five thousand, six hundred forty-seven".