64838147798 has 32 divisors (see below), whose sum is σ = 103535179776. Its totient is φ = 30347307648.

The previous prime is 64838147797. The next prime is 64838147809. The reversal of 64838147798 is 89774183846.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64838147797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9876065 + ... + 9882627.

It is an arithmetic number, because the mean of its divisors is an integer number (3235474368).

Almost surely, 2^64838147798 is an apocalyptic number.

64838147798 is a deficient number, since it is larger than the sum of its proper divisors (38697031978).

64838147798 is a wasteful number, since it uses less digits than its factorization.

64838147798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8108.

The product of its digits is 65028096, while the sum is 65.

The spelling of 64838147798 in words is "sixty-four billion, eight hundred thirty-eight million, one hundred forty-seven thousand, seven hundred ninety-eight".