166230001220511 has 32 divisors (see below), whose sum is σ = 227442901323456. Its totient is φ = 107928068096000.

The previous prime is 166230001220467. The next prime is 166230001220519. The reversal of 166230001220511 is 115022100032661.

It is a cyclic number.

It is not a de Polignac number, because 166230001220511 - 2¹⁵ = 166230001187743 is a prime.

It is a super-2 number, since 2×166230001220511² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166230001220519) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 424058275 + ... + 424450091.

It is an arithmetic number, because the mean of its divisors is an integer number (7107590666358).

Almost surely, 2^{166230001220511} is an apocalyptic number.

166230001220511 is a deficient number, since it is larger than the sum of its proper divisors (61212900102945).

166230001220511 is a wasteful number, since it uses less digits than its factorization.

166230001220511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397883.

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 166230001220511 in words is "one hundred sixty-six trillion, two hundred thirty billion, one million, two hundred twenty thousand, five hundred eleven".