641782287146 has 64 divisors (see below), whose sum is σ = 1348738062336. Its totient is φ = 220775544000.

The previous prime is 641782287089. The next prime is 641782287149.

641782287146 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 641782287091 and 641782287100.

It is not an unprimeable number, because it can be changed into a prime (641782287149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6922880 + ... + 7014971.

It is an arithmetic number, because the mean of its divisors is an integer number (21074032224).

Almost surely, 2^641782287146 is an apocalyptic number.

641782287146 is an abundant number, since it is smaller than the sum of its proper divisors (706955775190).

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

641782287146 is a wasteful number, since it uses less digits than its factorization.

641782287146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13937907.

The product of its digits is 7225344, while the sum is 56.

The spelling of 641782287146 in words is "six hundred forty-one billion, seven hundred eighty-two million, two hundred eighty-seven thousand, one hundred forty-six".