1186050016721 has 2 divisors, whose sum is σ = 1186050016722. Its totient is φ = 1186050016720.

The previous prime is 1186050016633. The next prime is 1186050016777. The reversal of 1186050016721 is 1276100506811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 848563380625 + 337486636096 = 921175^2 + 580936^2 .

It is a cyclic number.

It is not a de Polignac number, because 1186050016721 - 2³⁸ = 911172109777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1186050010721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593025008360 + 593025008361.

It is an arithmetic number, because the mean of its divisors is an integer number (593025008361).

Almost surely, 2^{1186050016721} is an apocalyptic number.

It is an amenable number.

1186050016721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1186050016721 is an equidigital number, since it uses as much as digits as its factorization.

1186050016721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 38.

The spelling of 1186050016721 in words is "one trillion, one hundred eighty-six billion, fifty million, sixteen thousand, seven hundred twenty-one".