641442163111 has 8 divisors (see below), whose sum is σ = 662162730624. Its totient is φ = 620723400960.

The previous prime is 641442163079. The next prime is 641442163121. The reversal of 641442163111 is 111361244146.

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

It is a cyclic number.

It is not a de Polignac number, because 641442163111 - 2⁵ = 641442163079 is a prime.

It is a super-2 number, since 2×641442163111² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641442163121) 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, 290091 + ... + 1169203.

It is an arithmetic number, because the mean of its divisors is an integer number (82770341328).

Almost surely, 2^641442163111 is an apocalyptic number.

641442163111 is a deficient number, since it is larger than the sum of its proper divisors (20720567513).

641442163111 is a wasteful number, since it uses less digits than its factorization.

641442163111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902681.

The product of its digits is 13824, while the sum is 34.

The spelling of 641442163111 in words is "six hundred forty-one billion, four hundred forty-two million, one hundred sixty-three thousand, one hundred eleven".