64669739837 has 8 divisors (see below), whose sum is σ = 67485337920. Its totient is φ = 61854464320.

The previous prime is 64669739801. The next prime is 64669739881. The reversal of 64669739837 is 73893796646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64669739837 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 (64669739887) 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 7 ways as a sum of consecutive naturals, for example, 386762 + ... + 528132.

It is an arithmetic number, because the mean of its divisors is an integer number (8435667240).

Almost surely, 2^64669739837 is an apocalyptic number.

It is an amenable number.

64669739837 is a deficient number, since it is larger than the sum of its proper divisors (2815598083).

64669739837 is a wasteful number, since it uses less digits than its factorization.

64669739837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161283.

The product of its digits is 246903552, while the sum is 68.

The spelling of 64669739837 in words is "sixty-four billion, six hundred sixty-nine million, seven hundred thirty-nine thousand, eight hundred thirty-seven".