50680721811569 has 2 divisors, whose sum is σ = 50680721811570. Its totient is φ = 50680721811568.

The previous prime is 50680721811557. The next prime is 50680721811619. The reversal of 50680721811569 is 96511812708605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33144200410000 + 17536521401569 = 5757100^2 + 4187663^2 .

It is a cyclic number.

It is not a de Polignac number, because 50680721811569 - 2⁴ = 50680721811553 is a prime.

It is a super-2 number, since 2×50680721811569² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50680721871569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25340360905784 + 25340360905785.

It is an arithmetic number, because the mean of its divisors is an integer number (25340360905785).

Almost surely, 2^{50680721811569} is an apocalyptic number.

It is an amenable number.

50680721811569 is a deficient number, since it is larger than the sum of its proper divisors (1).

50680721811569 is an equidigital number, since it uses as much as digits as its factorization.

50680721811569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7257600, while the sum is 59.

The spelling of 50680721811569 in words is "fifty trillion, six hundred eighty billion, seven hundred twenty-one million, eight hundred eleven thousand, five hundred sixty-nine".