68428210490 has 8 divisors (see below), whose sum is σ = 123170778900. Its totient is φ = 27371284192.

The previous prime is 68428210481. The next prime is 68428210511. The reversal of 68428210490 is 9401282486.

It can be written as a sum of positive squares in 2 ways, for example, as 68364992089 + 63218401 = 261467^2 + 7951^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3421410515 + ... + 3421410534.

Almost surely, 2^68428210490 is an apocalyptic number.

68428210490 is a deficient number, since it is larger than the sum of its proper divisors (54742568410).

68428210490 is a wasteful number, since it uses less digits than its factorization.

68428210490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6842821056.

The product of its (nonzero) digits is 221184, while the sum is 44.

The spelling of 68428210490 in words is "sixty-eight billion, four hundred twenty-eight million, two hundred ten thousand, four hundred ninety".