642255000346 has 16 divisors (see below), whose sum is σ = 986964085800. Its totient is φ = 313268312320.

The previous prime is 642255000301. The next prime is 642255000449. The reversal of 642255000346 is 643000552246.

It can be written as a sum of positive squares in 4 ways, for example, as 386648919721 + 255606080625 = 621811^2 + 505575^2 .

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 7 ways as a sum of consecutive naturals, for example, 646380 + ... + 1304728.

Almost surely, 2^642255000346 is an apocalyptic number.

642255000346 is a deficient number, since it is larger than the sum of its proper divisors (344709085454).

642255000346 is a wasteful number, since it uses less digits than its factorization.

642255000346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670289.

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 642255000346 in words is "six hundred forty-two billion, two hundred fifty-five million, three hundred forty-six", and thus it is an aban number.