49542268561 has 12 divisors (see below), whose sum is σ = 52490542212. Its totient is φ = 46752067584.

The previous prime is 49542268541. The next prime is 49542268579. The reversal of 49542268561 is 16586224594.

It can be written as a sum of positive squares in 2 ways, for example, as 36971598400 + 12570670161 = 192280^2 + 112119^2 .

It is not a de Polignac number, because 49542268561 - 2²³ = 49533879953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49542268499 and 49542268508.

It is not an unprimeable number, because it can be changed into a prime (49542268511) 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, 174220 + ... + 359773.

It is an arithmetic number, because the mean of its divisors is an integer number (4374211851).

Almost surely, 2^49542268561 is an apocalyptic number.

It is an amenable number.

49542268561 is a deficient number, since it is larger than the sum of its proper divisors (2948273651).

49542268561 is a wasteful number, since it uses less digits than its factorization.

49542268561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534288 (or 534269 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 52.

The spelling of 49542268561 in words is "forty-nine billion, five hundred forty-two million, two hundred sixty-eight thousand, five hundred sixty-one".