642144343441246 has 16 divisors (see below), whose sum is σ = 1014170838508800. Its totient is φ = 304096021181208.

The previous prime is 642144343441231. The next prime is 642144343441261.

642144343441246 is nontrivially palindromic in base 10.

642144343441246 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (642144343441231) and next prime (642144343441261).

It is a junction number, because it is equal to n+sod(n) for n = 642144343441193 and 642144343441202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2155826500 + ... + 2156124343.

It is an arithmetic number, because the mean of its divisors is an integer number (63385677406800).

Almost surely, 2^{642144343441246} is an apocalyptic number.

642144343441246 is a deficient number, since it is larger than the sum of its proper divisors (372026495067554).

642144343441246 is a wasteful number, since it uses less digits than its factorization.

642144343441246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311954783.

The product of its digits is 21233664, while the sum is 52.

The spelling of 642144343441246 in words is "six hundred forty-two trillion, one hundred forty-four billion, three hundred forty-three million, four hundred forty-one thousand, two hundred forty-six".