345220007730 has 64 divisors (see below), whose sum is σ = 904828071168. Its totient is φ = 83780363520.

The previous prime is 345220007707. The next prime is 345220007761. The reversal of 345220007730 is 37700022543.

It is a junction number, because it is equal to n+sod(n) for n = 345220007691 and 345220007700.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 6205969 + ... + 6261348.

It is an arithmetic number, because the mean of its divisors is an integer number (14137938612).

Almost surely, 2^345220007730 is an apocalyptic number.

345220007730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

345220007730 is an abundant number, since it is smaller than the sum of its proper divisors (559608063438).

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

345220007730 is a wasteful number, since it uses less digits than its factorization.

345220007730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12467411.

The product of its (nonzero) digits is 35280, while the sum is 33.

The spelling of 345220007730 in words is "three hundred forty-five billion, two hundred twenty million, seven thousand, seven hundred thirty".