64533051361 has 4 divisors (see below), whose sum is σ = 64533579012. Its totient is φ = 64532523712.

The previous prime is 64533051281. The next prime is 64533051413. The reversal of 64533051361 is 16315033546.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 35884103761 + 28648947600 = 189431^2 + 169260^2 .

It is a cyclic number.

It is not a de Polignac number, because 64533051361 - 2¹¹ = 64533049313 is a prime.

It is a super-2 number, since 2×64533051361² (a number of 22 digits) contains 22 as substring.

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 64533051361.

It is not an unprimeable number, because it can be changed into a prime (64533052361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25101 + ... + 360133.

It is an arithmetic number, because the mean of its divisors is an integer number (16133394753).

Almost surely, 2^64533051361 is an apocalyptic number.

It is an amenable number.

64533051361 is a deficient number, since it is larger than the sum of its proper divisors (527651).

64533051361 is a wasteful number, since it uses less digits than its factorization.

64533051361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527650.

The product of its (nonzero) digits is 97200, while the sum is 37.

The spelling of 64533051361 in words is "sixty-four billion, five hundred thirty-three million, fifty-one thousand, three hundred sixty-one".