64629034847 has 4 divisors (see below), whose sum is σ = 69600499080. Its totient is φ = 59657570616.

The previous prime is 64629034819. The next prime is 64629034849. The reversal of 64629034847 is 74843092646.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64629034847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64629034849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2485732097 + ... + 2485732122.

It is an arithmetic number, because the mean of its divisors is an integer number (17400124770).

Almost surely, 2^64629034847 is an apocalyptic number.

64629034847 is a deficient number, since it is larger than the sum of its proper divisors (4971464233).

64629034847 is a wasteful number, since it uses less digits than its factorization.

64629034847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4971464232.

The product of its (nonzero) digits is 6967296, while the sum is 53.

The spelling of 64629034847 in words is "sixty-four billion, six hundred twenty-nine million, thirty-four thousand, eight hundred forty-seven".