11445661520057 has 2 divisors, whose sum is σ = 11445661520058. Its totient is φ = 11445661520056.

The previous prime is 11445661520053. The next prime is 11445661520107. The reversal of 11445661520057 is 75002516654411.

11445661520057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7864317226921 + 3581344293136 = 2804339^2 + 1892444^2 .

It is a cyclic number.

It is not a de Polignac number, because 11445661520057 - 2² = 11445661520053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11445661519993 and 11445661520020.

It is not a weakly prime, because it can be changed into another prime (11445661520053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5722830760028 + 5722830760029.

It is an arithmetic number, because the mean of its divisors is an integer number (5722830760029).

Almost surely, 2^{11445661520057} is an apocalyptic number.

It is an amenable number.

11445661520057 is a deficient number, since it is larger than the sum of its proper divisors (1).

11445661520057 is an equidigital number, since it uses as much as digits as its factorization.

11445661520057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008000, while the sum is 47.

The spelling of 11445661520057 in words is "eleven trillion, four hundred forty-five billion, six hundred sixty-one million, five hundred twenty thousand, fifty-seven".