64377027249 has 4 divisors (see below), whose sum is σ = 85836036336. Its totient is φ = 42918018164.

The previous prime is 64377027217. The next prime is 64377027257. The reversal of 64377027249 is 94272077346.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64377027249 - 2⁵ = 64377027217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64377027289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10729504539 + ... + 10729504544.

It is an arithmetic number, because the mean of its divisors is an integer number (21459009084).

Almost surely, 2^64377027249 is an apocalyptic number.

It is an amenable number.

64377027249 is a deficient number, since it is larger than the sum of its proper divisors (21459009087).

64377027249 is a wasteful number, since it uses less digits than its factorization.

64377027249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21459009086.

The product of its (nonzero) digits is 3556224, while the sum is 51.

The spelling of 64377027249 in words is "sixty-four billion, three hundred seventy-seven million, twenty-seven thousand, two hundred forty-nine".