50440056715561 has 2 divisors, whose sum is σ = 50440056715562. Its totient is φ = 50440056715560.

The previous prime is 50440056715459. The next prime is 50440056715591. The reversal of 50440056715561 is 16551765004405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43449928822336 + 6990127893225 = 6591656^2 + 2643885^2 .

It is a cyclic number.

It is not a de Polignac number, because 50440056715561 - 2³³ = 50431466780969 is a prime.

It is not a weakly prime, because it can be changed into another prime (50440056715591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25220028357780 + 25220028357781.

It is an arithmetic number, because the mean of its divisors is an integer number (25220028357781).

Almost surely, 2^{50440056715561} is an apocalyptic number.

It is an amenable number.

50440056715561 is a deficient number, since it is larger than the sum of its proper divisors (1).

50440056715561 is an equidigital number, since it uses as much as digits as its factorization.

50440056715561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520000, while the sum is 49.

The spelling of 50440056715561 in words is "fifty trillion, four hundred forty billion, fifty-six million, seven hundred fifteen thousand, five hundred sixty-one".