64651268468503 has 8 divisors (see below), whose sum is σ = 64950978232800. Its totient is φ = 64351998486048.

The previous prime is 64651268468491. The next prime is 64651268468513. The reversal of 64651268468503 is 30586486215646.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64651268468503 is a prime.

It is a super-2 number, since 2×64651268468503² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64651268468513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109650763 + ... + 110238796.

It is an arithmetic number, because the mean of its divisors is an integer number (8118872279100).

Almost surely, 2^{64651268468503} is an apocalyptic number.

64651268468503 is a deficient number, since it is larger than the sum of its proper divisors (299709764297).

64651268468503 is a wasteful number, since it uses less digits than its factorization.

64651268468503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219890921.

The product of its (nonzero) digits is 199065600, while the sum is 64.

The spelling of 64651268468503 in words is "sixty-four trillion, six hundred fifty-one billion, two hundred sixty-eight million, four hundred sixty-eight thousand, five hundred three".