642648846246 has 32 divisors (see below), whose sum is σ = 1402654876416. Its totient is φ = 194670972000.

The previous prime is 642648846227. The next prime is 642648846277.

642648846246 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 642648846246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1595290 + ... + 1957101.

It is an arithmetic number, because the mean of its divisors is an integer number (43832964888).

Almost surely, 2^642648846246 is an apocalyptic number.

642648846246 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

642648846246 is an abundant number, since it is smaller than the sum of its proper divisors (760006030170).

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

642648846246 is a wasteful number, since it uses less digits than its factorization.

642648846246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3555148.

The product of its digits is 84934656, while the sum is 60.

The spelling of 642648846246 in words is "six hundred forty-two billion, six hundred forty-eight million, eight hundred forty-six thousand, two hundred forty-six".