340066736658 has 72 divisors (see below), whose sum is σ = 812219217264. Its totient is φ = 102753322320.

The previous prime is 340066736621. The next prime is 340066736663. The reversal of 340066736658 is 856637660043.

340066736658 is a `hidden beast` number, since 3 + 400 + 66 + 73 + 66 + 58 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 530785 + ... + 980747.

It is an arithmetic number, because the mean of its divisors is an integer number (11280822462).

Almost surely, 2^340066736658 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340066736658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406109608632).

340066736658 is an abundant number, since it is smaller than the sum of its proper divisors (472152480606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

340066736658 is a wasteful number, since it uses less digits than its factorization.

340066736658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450340 (or 450326 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 54.

The spelling of 340066736658 in words is "three hundred forty billion, sixty-six million, seven hundred thirty-six thousand, six hundred fifty-eight".