642463455601 has 8 divisors (see below), whose sum is σ = 700882300224. Its totient is φ = 584046790320.

The previous prime is 642463455509. The next prime is 642463455637. The reversal of 642463455601 is 106554364246.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-642463455601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642463455661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105300 + ... + 1138426.

It is an arithmetic number, because the mean of its divisors is an integer number (87610287528).

Almost surely, 2^642463455601 is an apocalyptic number.

It is an amenable number.

642463455601 is a deficient number, since it is larger than the sum of its proper divisors (58418844623).

642463455601 is a wasteful number, since it uses less digits than its factorization.

642463455601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089671.

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 642463455601 in words is "six hundred forty-two billion, four hundred sixty-three million, four hundred fifty-five thousand, six hundred one".