50120770561 has 4 divisors (see below), whose sum is σ = 50151389652. Its totient is φ = 50090151472.

The previous prime is 50120770541. The next prime is 50120770607. The reversal of 50120770561 is 16507702105.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28905100225 + 21215670336 = 170015^2 + 145656^2 .

It is a cyclic number.

It is not a de Polignac number, because 50120770561 - 2¹³ = 50120762369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50120770541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15307090 + ... + 15310363.

It is an arithmetic number, because the mean of its divisors is an integer number (12537847413).

Almost surely, 2^50120770561 is an apocalyptic number.

It is an amenable number.

50120770561 is a deficient number, since it is larger than the sum of its proper divisors (30619091).

50120770561 is a wasteful number, since it uses less digits than its factorization.

50120770561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30619090.

The product of its (nonzero) digits is 14700, while the sum is 34.

The spelling of 50120770561 in words is "fifty billion, one hundred twenty million, seven hundred seventy thousand, five hundred sixty-one".