664545404545466 has 16 divisors (see below), whose sum is σ = 1025926742584800. Its totient is φ = 322705528279728.

The previous prime is 664545404545411. The next prime is 664545404545481.

664545404545466 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×664545404545466² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 664545404545396 and 664545404545405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33926139101 + ... + 33926158688.

It is an arithmetic number, because the mean of its divisors is an integer number (64120421411550).

Almost surely, 2^{664545404545466} is an apocalyptic number.

664545404545466 is a deficient number, since it is larger than the sum of its proper divisors (361381338039334).

664545404545466 is a wasteful number, since it uses less digits than its factorization.

664545404545466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67852297933.

The product of its (nonzero) digits is 3317760000, while the sum is 68.

The spelling of 664545404545466 in words is "six hundred sixty-four trillion, five hundred forty-five billion, four hundred four million, five hundred forty-five thousand, four hundred sixty-six".