621111116041 has 16 divisors (see below), whose sum is σ = 705234902400. Its totient is φ = 542277445248.

The previous prime is 621111116027. The next prime is 621111116071. The reversal of 621111116041 is 140611111126.

It is a cyclic number.

It is not a de Polignac number, because 621111116041 - 2¹⁷ = 621110984969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 621111115997 and 621111116015.

It is not an unprimeable number, because it can be changed into a prime (621111116011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1885381 + ... + 2190178.

It is an arithmetic number, because the mean of its divisors is an integer number (44077181400).

Almost surely, 2^621111116041 is an apocalyptic number.

It is an amenable number.

621111116041 is a deficient number, since it is larger than the sum of its proper divisors (84123786359).

621111116041 is a wasteful number, since it uses less digits than its factorization.

621111116041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4076208.

The product of its (nonzero) digits is 288, while the sum is 25.

Adding to 621111116041 its reverse (140611111126), we get a palindrome (761722227167).

The spelling of 621111116041 in words is "six hundred twenty-one billion, one hundred eleven million, one hundred sixteen thousand, forty-one".