50001601111691 has 2 divisors, whose sum is σ = 50001601111692. Its totient is φ = 50001601111690.

The previous prime is 50001601111661. The next prime is 50001601111697. The reversal of 50001601111691 is 19611110610005.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50001601111691 is a prime.

It is a super-2 number, since 2×50001601111691² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50001601111697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25000800555845 + 25000800555846.

It is an arithmetic number, because the mean of its divisors is an integer number (25000800555846).

Almost surely, 2^{50001601111691} is an apocalyptic number.

50001601111691 is a deficient number, since it is larger than the sum of its proper divisors (1).

50001601111691 is an equidigital number, since it uses as much as digits as its factorization.

50001601111691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 32.

Adding to 50001601111691 its reverse (19611110610005), we get a palindrome (69612711721696).

The spelling of 50001601111691 in words is "fifty trillion, one billion, six hundred one million, one hundred eleven thousand, six hundred ninety-one".