401211500705 has 4 divisors (see below), whose sum is σ = 481453800852. Its totient is φ = 320969200560.

The previous prime is 401211500699. The next prime is 401211500707. The reversal of 401211500705 is 507005112104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 135483622561 + 265727878144 = 368081^2 + 515488^2 .

It is not a de Polignac number, because 401211500705 - 2²⁰ = 401210452129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401211500707) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 40121150066 + ... + 40121150075.

It is an arithmetic number, because the mean of its divisors is an integer number (120363450213).

Almost surely, 2^401211500705 is an apocalyptic number.

It is an amenable number.

401211500705 is a deficient number, since it is larger than the sum of its proper divisors (80242300147).

401211500705 is an equidigital number, since it uses as much as digits as its factorization.

401211500705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80242300146.

The product of its (nonzero) digits is 1400, while the sum is 26.

Adding to 401211500705 its reverse (507005112104), we get a palindrome (908216612809).

The spelling of 401211500705 in words is "four hundred one billion, two hundred eleven million, five hundred thousand, seven hundred five".