64155344003 has 16 divisors (see below), whose sum is σ = 65384546304. Its totient is φ = 62938632960.

The previous prime is 64155343957. The next prime is 64155344051. The reversal of 64155344003 is 30044355146.

It is a cyclic number.

It is not a de Polignac number, because 64155344003 - 2²⁰ = 64154295427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64155344063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26004176 + ... + 26006642.

It is an arithmetic number, because the mean of its divisors is an integer number (4086534144).

Almost surely, 2^64155344003 is an apocalyptic number.

64155344003 is a deficient number, since it is larger than the sum of its proper divisors (1229202301).

64155344003 is a wasteful number, since it uses less digits than its factorization.

64155344003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4802.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 64155344003 its reverse (30044355146), we get a palindrome (94199699149).

The spelling of 64155344003 in words is "sixty-four billion, one hundred fifty-five million, three hundred forty-four thousand, three".