664215145154 has 16 divisors (see below), whose sum is σ = 1113407207136. Its totient is φ = 294552170400.

The previous prime is 664215145133. The next prime is 664215145199. The reversal of 664215145154 is 451541512466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368189312 + ... + 368191115.

It is an arithmetic number, because the mean of its divisors is an integer number (69587950446).

Almost surely, 2^664215145154 is an apocalyptic number.

664215145154 is a deficient number, since it is larger than the sum of its proper divisors (449192061982).

664215145154 is a wasteful number, since it uses less digits than its factorization.

664215145154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736380481.

The product of its digits is 576000, while the sum is 44.

The spelling of 664215145154 in words is "six hundred sixty-four billion, two hundred fifteen million, one hundred forty-five thousand, one hundred fifty-four".