660153530575601 has 2 divisors, whose sum is σ = 660153530575602. Its totient is φ = 660153530575600.

The previous prime is 660153530575541. The next prime is 660153530575633. The reversal of 660153530575601 is 106575035351066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 583398760015201 + 76754770560400 = 24153649^2 + 8760980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660153530575601 is a prime.

It is a super-2 number, since 2×660153530575601² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (660153530575681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330076765287800 + 330076765287801.

It is an arithmetic number, because the mean of its divisors is an integer number (330076765287801).

Almost surely, 2^{660153530575601} is an apocalyptic number.

It is an amenable number.

660153530575601 is a deficient number, since it is larger than the sum of its proper divisors (1).

660153530575601 is an equidigital number, since it uses as much as digits as its factorization.

660153530575601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8505000, while the sum is 53.

The spelling of 660153530575601 in words is "six hundred sixty trillion, one hundred fifty-three billion, five hundred thirty million, five hundred seventy-five thousand, six hundred one".