620565061161 has 4 divisors (see below), whose sum is σ = 827420081552. Its totient is φ = 413710040772.

The previous prime is 620565061153. The next prime is 620565061217. The reversal of 620565061161 is 161160565026.

620565061161 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 620565061161 - 2³ = 620565061153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620565011161) 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, 103427510191 + ... + 103427510196.

It is an arithmetic number, because the mean of its divisors is an integer number (206855020388).

Almost surely, 2^620565061161 is an apocalyptic number.

It is an amenable number.

620565061161 is a deficient number, since it is larger than the sum of its proper divisors (206855020391).

620565061161 is a wasteful number, since it uses less digits than its factorization.

620565061161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206855020390.

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 620565061161 in words is "six hundred twenty billion, five hundred sixty-five million, sixty-one thousand, one hundred sixty-one".