64536852928186 has 4 divisors (see below), whose sum is σ = 96805279392282. Its totient is φ = 32268426464092.

The previous prime is 64536852928181. The next prime is 64536852928187. The reversal of 64536852928186 is 68182925863546.

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

It can be written as a sum of positive squares in only one way, i.e., 54739207974025 + 9797644954161 = 7398595^2 + 3130119^2 .

It is not an unprimeable number, because it can be changed into a prime (64536852928181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16134213232045 + ... + 16134213232048.

Almost surely, 2^{64536852928186} is an apocalyptic number.

64536852928186 is a deficient number, since it is larger than the sum of its proper divisors (32268426464096).

64536852928186 is a wasteful number, since it uses less digits than its factorization.

64536852928186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32268426464095.

The product of its digits is 1194393600, while the sum is 73.

The spelling of 64536852928186 in words is "sixty-four trillion, five hundred thirty-six billion, eight hundred fifty-two million, nine hundred twenty-eight thousand, one hundred eighty-six".