50151551161 has 2 divisors, whose sum is σ = 50151551162. Its totient is φ = 50151551160.

The previous prime is 50151551159. The next prime is 50151551179. The reversal of 50151551161 is 16115515105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36618649600 + 13532901561 = 191360^2 + 116331^2 .

It is a cyclic number.

It is not a de Polignac number, because 50151551161 - 2¹ = 50151551159 is a prime.

Together with 50151551159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (50151551141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25075775580 + 25075775581.

It is an arithmetic number, because the mean of its divisors is an integer number (25075775581).

Almost surely, 2^50151551161 is an apocalyptic number.

It is an amenable number.

50151551161 is a deficient number, since it is larger than the sum of its proper divisors (1).

50151551161 is an equidigital number, since it uses as much as digits as its factorization.

50151551161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3750, while the sum is 31.

The spelling of 50151551161 in words is "fifty billion, one hundred fifty-one million, five hundred fifty-one thousand, one hundred sixty-one".