621155411103 has 32 divisors (see below), whose sum is σ = 863743795200. Its totient is φ = 396569609856.

The previous prime is 621155411089. The next prime is 621155411113. The reversal of 621155411103 is 301114551126.

It is not a de Polignac number, because 621155411103 - 2¹² = 621155407007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621155411113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74897025 + ... + 74905317.

It is an arithmetic number, because the mean of its divisors is an integer number (26991993600).

Almost surely, 2^621155411103 is an apocalyptic number.

621155411103 is a deficient number, since it is larger than the sum of its proper divisors (242588384097).

621155411103 is a wasteful number, since it uses less digits than its factorization.

621155411103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15231.

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 621155411103 its reverse (301114551126), we get a palindrome (922269962229).

The spelling of 621155411103 in words is "six hundred twenty-one billion, one hundred fifty-five million, four hundred eleven thousand, one hundred three".