64352473563 has 54 divisors (see below), whose sum is σ = 101771794332. Its totient is φ = 36170008560.

The previous prime is 64352473553. The next prime is 64352473573. The reversal of 64352473563 is 36537425346.

It is an interprime number because it is at equal distance from previous prime (64352473553) and next prime (64352473573).

It is not a de Polignac number, because 64352473563 - 2⁹ = 64352473051 is a prime.

It is a super-2 number, since 2×64352473563² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64352473543) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 1054958553 + ... + 1054958613.

It is an arithmetic number, because the mean of its divisors is an integer number (1884662858).

Almost surely, 2^64352473563 is an apocalyptic number.

64352473563 is a deficient number, since it is larger than the sum of its proper divisors (37419320769).

64352473563 is an frugal number, since it uses more digits than its factorization.

64352473563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 71 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 48.

Multiplying 64352473563 by its sum of digits (48), we get a square (3088918731024 = 1757532²).

The spelling of 64352473563 in words is "sixty-four billion, three hundred fifty-two million, four hundred seventy-three thousand, five hundred sixty-three".