50642660561 has 32 divisors (see below), whose sum is σ = 57143750400. Its totient is φ = 44627742720.

The previous prime is 50642660533. The next prime is 50642660641. The reversal of 50642660561 is 16506624605.

50642660561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 50642660561 - 2²² = 50638466257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50642660501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5555075 + ... + 5564183.

It is an arithmetic number, because the mean of its divisors is an integer number (1785742200).

Almost surely, 2^50642660561 is an apocalyptic number.

It is an amenable number.

50642660561 is a deficient number, since it is larger than the sum of its proper divisors (6501089839).

50642660561 is a wasteful number, since it uses less digits than its factorization.

50642660561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9449.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 50642660561 in words is "fifty billion, six hundred forty-two million, six hundred sixty thousand, five hundred sixty-one".