345671682820 has 24 divisors (see below), whose sum is σ = 730782423000. Its totient is φ = 137340694272.

The previous prime is 345671682793. The next prime is 345671682827. The reversal of 345671682820 is 28286176543.

It can be written as a sum of positive squares in 4 ways, for example, as 63591726276 + 282079956544 = 252174^2 + 531112^2 .

It is a super-2 number, since 2×345671682820² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (345671682827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57995625 + ... + 58001584.

It is an arithmetic number, because the mean of its divisors is an integer number (30449267625).

Almost surely, 2^345671682820 is an apocalyptic number.

It is an amenable number.

345671682820 is an abundant number, since it is smaller than the sum of its proper divisors (385110740180).

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

345671682820 is a wasteful number, since it uses less digits than its factorization.

345671682820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115997367 (or 115997365 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 345671682820 in words is "three hundred forty-five billion, six hundred seventy-one million, six hundred eighty-two thousand, eight hundred twenty".