64534061177 has 4 divisors (see below), whose sum is σ = 64587264420. Its totient is φ = 64480857936.

The previous prime is 64534061171. The next prime is 64534061191. The reversal of 64534061177 is 77116043546.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24894843961 + 39639217216 = 157781^2 + 199096^2 .

It is a cyclic number.

It is not a de Polignac number, because 64534061177 - 2⁶ = 64534061113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64534061171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26599802 + ... + 26602227.

It is an arithmetic number, because the mean of its divisors is an integer number (16146816105).

Almost surely, 2^64534061177 is an apocalyptic number.

It is an amenable number.

64534061177 is a deficient number, since it is larger than the sum of its proper divisors (53203243).

64534061177 is a wasteful number, since it uses less digits than its factorization.

64534061177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53203242.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 64534061177 in words is "sixty-four billion, five hundred thirty-four million, sixty-one thousand, one hundred seventy-seven".