50780155061 has 2 divisors, whose sum is σ = 50780155062. Its totient is φ = 50780155060.

The previous prime is 50780155037. The next prime is 50780155081. The reversal of 50780155061 is 16055108705.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42551850961 + 8228304100 = 206281^2 + 90710^2 .

It is a cyclic number.

It is not a de Polignac number, because 50780155061 - 2¹⁰ = 50780154037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50780155081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25390077530 + 25390077531.

It is an arithmetic number, because the mean of its divisors is an integer number (25390077531).

Almost surely, 2^50780155061 is an apocalyptic number.

It is an amenable number.

50780155061 is a deficient number, since it is larger than the sum of its proper divisors (1).

50780155061 is an equidigital number, since it uses as much as digits as its factorization.

50780155061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42000, while the sum is 38.

The spelling of 50780155061 in words is "fifty billion, seven hundred eighty million, one hundred fifty-five thousand, sixty-one".