354218860680 has 128 divisors (see below), whose sum is σ = 1083169825920. Its totient is φ = 92649277440.

The previous prime is 354218860661. The next prime is 354218860729. The reversal of 354218860680 is 86068812453.

It is a happy number.

It is a super-3 number, since 3×354218860680³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1473859 + ... + 1697261.

It is an arithmetic number, because the mean of its divisors is an integer number (8462264265).

Almost surely, 2^354218860680 is an apocalyptic number.

354218860680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 354218860680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541584912960).

354218860680 is an abundant number, since it is smaller than the sum of its proper divisors (728950965240).

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

354218860680 is a wasteful number, since it uses less digits than its factorization.

354218860680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223671 (or 223667 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 354218860680 in words is "three hundred fifty-four billion, two hundred eighteen million, eight hundred sixty thousand, six hundred eighty".