64505553169 has 8 divisors (see below), whose sum is σ = 64943049600. Its totient is φ = 64069513536.

The previous prime is 64505553157. The next prime is 64505553181. The reversal of 64505553169 is 96135550546.

It is an interprime number because it is at equal distance from previous prime (64505553157) and next prime (64505553181).

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

It is a cyclic number.

It is not a de Polignac number, because 64505553169 - 2¹⁷ = 64505422097 is a prime.

It is a super-2 number, since 2×64505553169² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64505553569) 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, 275269 + ... + 452530.

It is an arithmetic number, because the mean of its divisors is an integer number (8117881200).

Almost surely, 2^64505553169 is an apocalyptic number.

It is an amenable number.

64505553169 is a deficient number, since it is larger than the sum of its proper divisors (437496431).

64505553169 is a wasteful number, since it uses less digits than its factorization.

64505553169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728399.

The product of its (nonzero) digits is 2430000, while the sum is 49.

The spelling of 64505553169 in words is "sixty-four billion, five hundred five million, five hundred fifty-three thousand, one hundred sixty-nine".