664875146875 has 12 divisors (see below), whose sum is σ = 831040747488. Its totient is φ = 531900115000.

The previous prime is 664875146861. The next prime is 664875146911. The reversal of 664875146875 is 578641578466.

It is not a de Polignac number, because 664875146875 - 2³⁹ = 115119332987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 664875146875.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106376899 + ... + 106383148.

It is an arithmetic number, because the mean of its divisors is an integer number (69253395624).

Almost surely, 2^664875146875 is an apocalyptic number.

664875146875 is a deficient number, since it is larger than the sum of its proper divisors (166165600613).

664875146875 is an frugal number, since it uses more digits than its factorization.

664875146875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212760072 (or 212760052 counting only the distinct ones).

The product of its digits is 270950400, while the sum is 67.

The spelling of 664875146875 in words is "six hundred sixty-four billion, eight hundred seventy-five million, one hundred forty-six thousand, eight hundred seventy-five".