64455216501 has 8 divisors (see below), whose sum is σ = 92551080160. Its totient is φ = 39664748592.

The previous prime is 64455216499. The next prime is 64455216509. The reversal of 64455216501 is 10561255446.

64455216501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 64455216501 - 2¹ = 64455216499 is a prime.

It is a super-3 number, since 3×64455216501³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1652697859 = 64455216501 / (6 + 4 + 4 + 5 + 5 + 2 + 1 + 6 + 5 + 0 + 1).

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 64455216501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64455216509) 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, 826348891 + ... + 826348968.

It is an arithmetic number, because the mean of its divisors is an integer number (11568885020).

Almost surely, 2^64455216501 is an apocalyptic number.

It is an amenable number.

64455216501 is a deficient number, since it is larger than the sum of its proper divisors (28095863659).

64455216501 is a wasteful number, since it uses less digits than its factorization.

64455216501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652697875.

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 64455216501 in words is "sixty-four billion, four hundred fifty-five million, two hundred sixteen thousand, five hundred one".