1660150655201 has 2 divisors, whose sum is σ = 1660150655202. Its totient is φ = 1660150655200.

The previous prime is 1660150655197. The next prime is 1660150655227. The reversal of 1660150655201 is 1025560510661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1614617496976 + 45533158225 = 1270676^2 + 213385^2 .

It is a cyclic number.

It is not a de Polignac number, because 1660150655201 - 2² = 1660150655197 is a prime.

It is a super-2 number, since 2×1660150655201² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1660150625201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830075327600 + 830075327601.

It is an arithmetic number, because the mean of its divisors is an integer number (830075327601).

Almost surely, 2^{1660150655201} is an apocalyptic number.

It is an amenable number.

1660150655201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660150655201 is an equidigital number, since it uses as much as digits as its factorization.

1660150655201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 1660150655201 in words is "one trillion, six hundred sixty billion, one hundred fifty million, six hundred fifty-five thousand, two hundred one".