642246563145 has 64 divisors (see below), whose sum is σ = 1170464256000. Its totient is φ = 297672080640.

The previous prime is 642246563137. The next prime is 642246563159. The reversal of 642246563145 is 541365642246.

It is not a de Polignac number, because 642246563145 - 2³ = 642246563137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 642246563094 and 642246563103.

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 63 ways as a sum of consecutive naturals, for example, 6283156 + ... + 6384554.

It is an arithmetic number, because the mean of its divisors is an integer number (18288504000).

Almost surely, 2^642246563145 is an apocalyptic number.

It is an amenable number.

642246563145 is a deficient number, since it is larger than the sum of its proper divisors (528217692855).

642246563145 is a wasteful number, since it uses less digits than its factorization.

642246563145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103110.

The product of its digits is 4147200, while the sum is 48.

The spelling of 642246563145 in words is "six hundred forty-two billion, two hundred forty-six million, five hundred sixty-three thousand, one hundred forty-five".